G.G.

@ggeiss_mlb • 9,403 subscribers

📊: @redsox. ✍️: @pitcherlist // @ggeiss_PL. 💼: @mlb PD & data consultant. Pitching enthusiast. Draft nerd. Prospects analyst. Always optimistic.

Shorts

The Red Sox also acquired prospect OF Carlos Gutierrez (🔜) from the Giants in the deal that sent INF Marcelo Mayer back to the west coast. Gutierrez, 21, has been exceptional with San Francisco's High-A squad this season: ⚾️ .271 BA ⚾️ .826 OPS ⚾️ 15% BB / 20% K ⚾️ 124 wRC+ Gutierrez boasts an advanced approach at the plate, rarely chasing and limiting whiffs well. Baseball America also notes he rakes against fastballs. As far as the rest of the player? He's certainly a plus hit over power profile for now. The Red Sox have done a fantastic job of acquiring players with similar profiles, putting them on a bat speed program, and watching the EV90s (as well as SLG) take off. Enddy Azocar was one of those guys. Gutierrez is a more than capable defender in CF. He's got a good enough arm to stick there long term. He also runs very well (55-60 grade)... the 21-year-old has swiped 26 bases already this season. Gutierrez was signed by the Giants as an IAFA back in 2023 out of Mexico. He won't be Rule 5 eligible until 2027. The Red Sox lost a super high ceiling outfielder in Azocar earlier, but immediately replaced him with a sneaky good player in Gutierrez. Off the bat, I really like this acquisition and I see the vision. Good all-around tools and maybe some more pop on the way. Solid add.

34,969 views

There’s a reason Craig Breslow traded a Boston legend like Chris Sale for Vaughn Grissom. He believes in him. The upside is real. Grissom debuted at 21 y/o with Atlanta while skipping AAA. • He owned a career .287/.339/.407/.746 slash in 236 MLB PA prior to being traded • Career .312/.404/.463/.867 slash with a 134 wRC+ and 11.1% BB/14.4% K in the minors • Mashes LHP… career .289/.346/.381/.727 slash, 102 wRC+ in the majors • Called-up for Boston’s last 8 games: slashed .330/.370/.417/.787 with 2 XBH and a 117 wRC+… also had 2 three-hit games down the stretch • limits K and whiff rates, walks a good amount, & commands the zone… all things this team needs out of a RHH - in 2024 (AAA): 19.2% K, 15.2% BB ‼️ Let it be known, the Grissom people saw (or think they saw) last year isn’t the Grissom we will see next year. He joined a new team. Strained not one, but BOTH of him hamstrings. Didn’t have a full Spring Training. Then recovered, got the flu, and reportedly lost 10+ lbs. Recovered again, dominant AAA, and finished the year off strong in the majors. 2024 was hard for him, and despite the many struggles above, he proceeded to ball out. That’s a wild season. I’d love to land Alex Bregman, but Vaughn Grissom is a guy who should be penciled in at 2B for this club on Opening Day. People see -0.2 fWAR and a .190 AVG and scream “bust.” I see a 24 y/o kid with a chip on his shoulder and loads of potential ready to bounce back in the biggest way next year. I can’t wait to see what Vaughn Grissom can do in 2025.

There’s a reason Craig Breslow traded a Boston legend like Chris Sale for Vaughn Grissom. He believes in him. The upside is real. Grissom debuted at 21 y/o with Atlanta while skipping AAA. • He owned a career .287/.339/.407/.746 slash in 236 MLB PA prior to being traded • Career .312/.404/.463/.867 slash with a 134 wRC+ and 11.1% BB/14.4% K in the minors • Mashes LHP… career .289/.346/.381/.727 slash, 102 wRC+ in the majors • Called-up for Boston’s last 8 games: slashed .330/.370/.417/.787 with 2 XBH and a 117 wRC+… also had 2 three-hit games down the stretch • limits K and whiff rates, walks a good amount, & commands the zone… all things this team needs out of a RHH - in 2024 (AAA): 19.2% K, 15.2% BB ‼️ Let it be known, the Grissom people saw (or think they saw) last year isn’t the Grissom we will see next year. He joined a new team. Strained not one, but BOTH of him hamstrings. Didn’t have a full Spring Training. Then recovered, got the flu, and reportedly lost 10+ lbs. Recovered again, dominant AAA, and finished the year off strong in the majors. 2024 was hard for him, and despite the many struggles above, he proceeded to ball out. That’s a wild season. I’d love to land Alex Bregman, but Vaughn Grissom is a guy who should be penciled in at 2B for this club on Opening Day. People see -0.2 fWAR and a .190 AVG and scream “bust.” I see a 24 y/o kid with a chip on his shoulder and loads of potential ready to bounce back in the biggest way next year. I can’t wait to see what Vaughn Grissom can do in 2025.

183,665 views

Hey he’s a good framer eh?

Hey he’s a good framer eh?

138,060 views

At long last, RHP John Holobetz (GG #14) is headed to Triple-A Worcester. Finally some statcast data — that sinker will turn some heads. The 23yo has posted a 2.70 ERA/2.13 FIP with a 0.90 WHIP and 30% K-BB rate over his last five starts (23.1 IP). He started the year off on a scorching hot note, cooled off a bit, but has now found his groove again. K% and SwStr% are up a ton this year but cStr% is a tad bit down. I’d like to see a 30% CSW rate in AAA. Velo is up. Moldable clay in the arsenal. High floor thanks to his strike-throwing ability. Holobetz is another metric darling arm. I’m super pumped. Top 10 prospect in the org right now (meaning next update, post-deadline).

At long last, RHP John Holobetz (GG #14) is headed to Triple-A Worcester. Finally some statcast data — that sinker will turn some heads. The 23yo has posted a 2.70 ERA/2.13 FIP with a 0.90 WHIP and 30% K-BB rate over his last five starts (23.1 IP). He started the year off on a scorching hot note, cooled off a bit, but has now found his groove again. K% and SwStr% are up a ton this year but cStr% is a tad bit down. I’d like to see a 30% CSW rate in AAA. Velo is up. Moldable clay in the arsenal. High floor thanks to his strike-throwing ability. Holobetz is another metric darling arm. I’m super pumped. Top 10 prospect in the org right now (meaning next update, post-deadline).

14,047 views

RHP Anthony Eyanson (GG #2) in his Double-A Debut: 4 IP, 3 H, 1 BB, 1 ER, 4 K • 11 whiffs (41%) His outings remain must-watch TV for Red Sox prospect enjoyers.

RHP Anthony Eyanson (GG #2) in his Double-A Debut: 4 IP, 3 H, 1 BB, 1 ER, 4 K • 11 whiffs (41%) His outings remain must-watch TV for Red Sox prospect enjoyers.

13,526 views

11.328: INF Cody Miller 5’11 | 178 lbs | R/R | 20yo • East Tennessee State .331/.430/.623/1.052, .457 wOBA, 10% BB/12% K, 135 wRC+ Super under-the-radar prospect. Scrappy, does a job type of guy. Limits Ks, draws walks, plays SS but can move around the infield and occasionally has gotten OF reps. Rakes a ton without question – has a nice track record of hitting at both the collegiate level with ETSU and in summer ball (APPY/NECBL) as well. Big development this year: power. Hit a combined 6 HRs in over 700 ABs between college and summer ball… he had EIGHTEEN this year alone! And there’s more of that when he inevitably adds muscle with help of pDev. This is one of those guys who nobody talks about and all of a sudden sprouts into a quality big league player.

11.328: INF Cody Miller 5’11 | 178 lbs | R/R | 20yo • East Tennessee State .331/.430/.623/1.052, .457 wOBA, 10% BB/12% K, 135 wRC+ Super under-the-radar prospect. Scrappy, does a job type of guy. Limits Ks, draws walks, plays SS but can move around the infield and occasionally has gotten OF reps. Rakes a ton without question – has a nice track record of hitting at both the collegiate level with ETSU and in summer ball (APPY/NECBL) as well. Big development this year: power. Hit a combined 6 HRs in over 700 ABs between college and summer ball… he had EIGHTEEN this year alone! And there’s more of that when he inevitably adds muscle with help of pDev. This is one of those guys who nobody talks about and all of a sudden sprouts into a quality big league player.

20,158 views

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Kristian Campbell leaves the yard for Worcester! 95.7 EV / 356 FT solo HR:

Kristian Campbell leaves the yard for Worcester! 95.7 EV / 356 FT solo HR:

234,548 views • 5 months ago

The Red Sox social media team has been absolutely killing it with these 😂 🎥: @redsox (TT)

The Red Sox social media team has been absolutely killing it with these 😂 🎥: @redsox (TT)

623,212 views • 1 year ago

Welcome back to the majors, Nick Sogard. Abundantly clear he should’ve been here a long time ago. 88.1 EV / .290 xBA RBI double:

Welcome back to the majors, Nick Sogard. Abundantly clear he should’ve been here a long time ago. 88.1 EV / .290 xBA RBI double:

101,043 views • 3 months ago

OF Enddy Azocar (GG #6) with High-A Greenville yesterday: 4-for-6, HR, 4 RBI Borderline untouchable prospect heading into the trade deadline. It’s Rafaela-esque defense & athleticism in CF paired with tremendous raw power. And the EVs are still ticking up.

OF Enddy Azocar (GG #6) with High-A Greenville yesterday: 4-for-6, HR, 4 RBI Borderline untouchable prospect heading into the trade deadline. It’s Rafaela-esque defense & athleticism in CF paired with tremendous raw power. And the EVs are still ticking up.

35,831 views • 1 month ago

Hypothetical Opening Day lineup: LF Anthony + 3B Paredes DH Duran + 1B Contreras RF Abreu SS Story 2B Mayer / Gonzalez C Narvaez CF Rafaela That's a damn good lineup. Very well balanced. Not to mention they have plenty of depth if they need (Casas, Campbell). I'm intrigued.

Hypothetical Opening Day lineup: LF Anthony + 3B Paredes DH Duran + 1B Contreras RF Abreu SS Story 2B Mayer / Gonzalez C Narvaez CF Rafaela That's a damn good lineup. Very well balanced. Not to mention they have plenty of depth if they need (Casas, Campbell). I'm intrigued.

80,516 views • 7 months ago

We’ve seen a lot of funny things this season. This is certainly at the top of the list. Lol.

We’ve seen a lot of funny things this season. This is certainly at the top of the list. Lol.

161,328 views • 2 years ago

OF Kristian Campbell with Triple-A Worcester yesterday: 3-for-4, 2B, HR, RBI Campbell smacked a single against Carlos Rodon in the first inning. Then launched a 102.7 EV / / 423 FT home run off him in the sixth. Also added a 104.6 EV double in the eighth inning.

OF Kristian Campbell with Triple-A Worcester yesterday: 3-for-4, 2B, HR, RBI Campbell smacked a single against Carlos Rodon in the first inning. Then launched a 102.7 EV / / 423 FT home run off him in the sixth. Also added a 104.6 EV double in the eighth inning.

38,924 views • 4 months ago

Caleb Durbin immediately jumps off the page as yet another breakout candidate acquired by Boston this offseason. On the surface, Durbin's production isn't necessarily eye-popping. As a rookie in '25: ⚾️ .721 OPS ⚾️ 6% BB / 10% K ⚾️ .312 xwOBA ⚾️ 105 wRC+ ⚾️ 2.6 fWAR So, what stands out regarding Durbin? I. Elite Swing Decisions & Whiff-Ability. Facing major league pitching for the first time in his career, Durbin registered the 5th-best K% (10%) in MLB last year. His 94% zCon rate (T-5th in MLB) is also elite. Durbin's whiff% and chase% also ranked inside the 95th percentile (or better). We're talking about a bat with some similar contact traits like we see in Jacob Wilson, for example, but with far less chase and a bit more pullside thump. He squares up the ball well (33% — 95th PCTL) and pairs that ability with taking a steady amount of walks. Point blank, the 25-year-old is a demon at limiting whiff. II. Power Surge? It's All in the Pull Air%. A gigantic reason it's so easy to pencil Durbin in as a breakout candidate is his fantastic park fit at Fenway. As a rookie, Durbin turned in an above-average 41% pull rate, plus an even-better 20% pull air rate. Utilizing that approach with a big target in left field will work wonders for his OPS. I don't expect Durbin to mash 20+ HR out of nowhere, but I'd certainly bank on seeing a number of flyouts simply turn into doubles or homers at home. III. Quality Defense. Breslow talked a lot about upgrading defense, and this move certainly does that. I've been very vocal since the start of the offseason that Mayer at 2B, not 3B, would be my preference for a multitude of reasons. Durbin (who can play all over the infield), enters the building as a plus defender at 3B. As a rookie, Durbin turned in 2 OAA, 5 DRS, 5 rPM, and 1 FRV at the hot corner. Sliding Mayer over to second base allows for easier platoon management with Romy Gonzalez — who saw an increase in his defensive production at 2B a year ago — and yes, is an upgrade over Alex Bregman's 1 DRS in 2025. IV. Handling Velo. Something that shouldn't get overlooked is Durbin's ability to handle velocity — a department the Red Sox obviously needed to upgrade in after last season. In '25 vs. FA-types 94+ mph: ⚾️ .258 BA → .275 xBA ⚾️ .350 SLG → .375 xSLG ⚾️ .319 wOBA → .337 xwOBA ⚾️ 8% whiff rate — — — Overall, I'm really ecstatic about the Durbin acquisition. This is FAR better than signing Suarez and calling it a day, imo. Can't forget Durbin is a guy the Red Sox have under team control for a while now (2032 UFA!). Utilizing Harrison — who's name has been yanked around between trade talks or a move to the bullpen — is a great piece of business. The comp pick is also massive, but we'll talk more about that soon. I think at his best, Durbin could lead off for the Red Sox by the end of '26. A legit breakout candidate and bag stealing threat with a high floor thanks to limited swing-and-miss and good defense. Really looking forward to see him more in camp.

Caleb Durbin immediately jumps off the page as yet another breakout candidate acquired by Boston this offseason. On the surface, Durbin's production isn't necessarily eye-popping. As a rookie in '25: ⚾️ .721 OPS ⚾️ 6% BB / 10% K ⚾️ .312 xwOBA ⚾️ 105 wRC+ ⚾️ 2.6 fWAR So, what stands out regarding Durbin? I. Elite Swing Decisions & Whiff-Ability. Facing major league pitching for the first time in his career, Durbin registered the 5th-best K% (10%) in MLB last year. His 94% zCon rate (T-5th in MLB) is also elite. Durbin's whiff% and chase% also ranked inside the 95th percentile (or better). We're talking about a bat with some similar contact traits like we see in Jacob Wilson, for example, but with far less chase and a bit more pullside thump. He squares up the ball well (33% — 95th PCTL) and pairs that ability with taking a steady amount of walks. Point blank, the 25-year-old is a demon at limiting whiff. II. Power Surge? It's All in the Pull Air%. A gigantic reason it's so easy to pencil Durbin in as a breakout candidate is his fantastic park fit at Fenway. As a rookie, Durbin turned in an above-average 41% pull rate, plus an even-better 20% pull air rate. Utilizing that approach with a big target in left field will work wonders for his OPS. I don't expect Durbin to mash 20+ HR out of nowhere, but I'd certainly bank on seeing a number of flyouts simply turn into doubles or homers at home. III. Quality Defense. Breslow talked a lot about upgrading defense, and this move certainly does that. I've been very vocal since the start of the offseason that Mayer at 2B, not 3B, would be my preference for a multitude of reasons. Durbin (who can play all over the infield), enters the building as a plus defender at 3B. As a rookie, Durbin turned in 2 OAA, 5 DRS, 5 rPM, and 1 FRV at the hot corner. Sliding Mayer over to second base allows for easier platoon management with Romy Gonzalez — who saw an increase in his defensive production at 2B a year ago — and yes, is an upgrade over Alex Bregman's 1 DRS in 2025. IV. Handling Velo. Something that shouldn't get overlooked is Durbin's ability to handle velocity — a department the Red Sox obviously needed to upgrade in after last season. In '25 vs. FA-types 94+ mph: ⚾️ .258 BA → .275 xBA ⚾️ .350 SLG → .375 xSLG ⚾️ .319 wOBA → .337 xwOBA ⚾️ 8% whiff rate — — — Overall, I'm really ecstatic about the Durbin acquisition. This is FAR better than signing Suarez and calling it a day, imo. Can't forget Durbin is a guy the Red Sox have under team control for a while now (2032 UFA!). Utilizing Harrison — who's name has been yanked around between trade talks or a move to the bullpen — is a great piece of business. The comp pick is also massive, but we'll talk more about that soon. I think at his best, Durbin could lead off for the Red Sox by the end of '26. A legit breakout candidate and bag stealing threat with a high floor thanks to limited swing-and-miss and good defense. Really looking forward to see him more in camp.

49,207 views • 7 months ago

C/INF Anthony Seigler is an ambidextrous (!!) depth addition who should instantly compete for a role on the major league roster with the Red Sox. The 26yo was a dynamic offensive producer at the Triple-A level last season: ⚾️ .285/.414/.478 ⚾️ .892 OPS ⚾️ 17% BB / 19% K ⚾️ .379 xwOBA ⚾️ 143 wRC+ Seigler absolutely feasted on RHPs in Triple-A last season, boasting a diabolical .983 OPS and more BBs (43) than Ks (42) in 246 PAs. He also turned in quality rates in terms of zCon (84%), SwStr (9%), chase (20%), and HH (46%) and was an above average baserunner. Another thing Seigler does exceptionally well is rake against fastballs. He turned in a .529 SLG and .408 xwOBA against FA-types in '25, plus was able to maintain that elite production against velo, slashing .326/.436/.587 against FA-types of 94+ mph in Triple-A. Seigler enters camp as a dark horse to make the 26-man roster. Despite mainly seeing time at 3B with the Brewers, he's had experience dabbling in some 2B/OF/C work in the minors. I should note, Baseball America rated Seigler as the Yankees' top defensive catching prospect back in 2019. He hasn't been able to show all that much behind the plate while moving around, but perhaps there's more to tap into here. He is reunited with old friend, Tyson Blaser. Seigler's versatility and platoon potential should give him a shot to crack the roster. If not, I'm very confident we see him making an impact at some point in '26. I'm very excited about this addition as well.

C/INF Anthony Seigler is an ambidextrous (!!) depth addition who should instantly compete for a role on the major league roster with the Red Sox. The 26yo was a dynamic offensive producer at the Triple-A level last season: ⚾️ .285/.414/.478 ⚾️ .892 OPS ⚾️ 17% BB / 19% K ⚾️ .379 xwOBA ⚾️ 143 wRC+ Seigler absolutely feasted on RHPs in Triple-A last season, boasting a diabolical .983 OPS and more BBs (43) than Ks (42) in 246 PAs. He also turned in quality rates in terms of zCon (84%), SwStr (9%), chase (20%), and HH (46%) and was an above average baserunner. Another thing Seigler does exceptionally well is rake against fastballs. He turned in a .529 SLG and .408 xwOBA against FA-types in '25, plus was able to maintain that elite production against velo, slashing .326/.436/.587 against FA-types of 94+ mph in Triple-A. Seigler enters camp as a dark horse to make the 26-man roster. Despite mainly seeing time at 3B with the Brewers, he's had experience dabbling in some 2B/OF/C work in the minors. I should note, Baseball America rated Seigler as the Yankees' top defensive catching prospect back in 2019. He hasn't been able to show all that much behind the plate while moving around, but perhaps there's more to tap into here. He is reunited with old friend, Tyson Blaser. Seigler's versatility and platoon potential should give him a shot to crack the roster. If not, I'm very confident we see him making an impact at some point in '26. I'm very excited about this addition as well.

27,120 views • 7 months ago

Jarren Duran posted this video on IG in partnership with Vencer Co. (a mental health clothing brand for athletes). New apparel drops on October 10th, which is World Mental Health Day, at 1pm EST.

63,222 views • 1 year ago

David Sandlin is primed for a breakout year in 2025. FF T101 mph. Three bigtime secondary offerings. Got BABIP hard last season (.356) and that number is bound to come down. 7 K in 2.2 IP… today is just the beginning. 🎥: Josh Norris 🐻 / Baseball America

David Sandlin is primed for a breakout year in 2025. FF T101 mph. Three bigtime secondary offerings. Got BABIP hard last season (.356) and that number is bound to come down. 7 K in 2.2 IP… today is just the beginning. 🎥: Josh Norris 🐻 / Baseball America

48,815 views • 1 year ago

Indeed! You ask, I deliver. INF Vinny Capra is a guy that's really impressed with Triple-A Worcester to start the season. Through 29 games: ⚾️ .961 OPS ⚾️ .412 xwOBA ⚾️ 20% BB / 19% K ⚾️ 153 wRC+ Some of the underlying nuggets are just as intriguing as his production indicates — a monster 23% Pull Air rate ranks in the 89th percentile among qualified AAA bats. He's limiting whiff and chase at a high level. EVs are significantly up, too. YoY changes, per request: ⚾️ xwOBA: .316 → .412 ⚾️ EV (mph): 85.7 → 89.2 ⚾️ EV90: 99.2 → 104.3 ⚾️ HH%: 34% → 43% Can't forget he's a +4 DRS / +2 OAA / +3 FRV defender at shortstop throughout his career. Self explanatory, but I'd take him over IKF any day of the week.

Indeed! You ask, I deliver. INF Vinny Capra is a guy that's really impressed with Triple-A Worcester to start the season. Through 29 games: ⚾️ .961 OPS ⚾️ .412 xwOBA ⚾️ 20% BB / 19% K ⚾️ 153 wRC+ Some of the underlying nuggets are just as intriguing as his production indicates — a monster 23% Pull Air rate ranks in the 89th percentile among qualified AAA bats. He's limiting whiff and chase at a high level. EVs are significantly up, too. YoY changes, per request: ⚾️ xwOBA: .316 → .412 ⚾️ EV (mph): 85.7 → 89.2 ⚾️ EV90: 99.2 → 104.3 ⚾️ HH%: 34% → 43% Can't forget he's a +4 DRS / +2 OAA / +3 FRV defender at shortstop throughout his career. Self explanatory, but I'd take him over IKF any day of the week.

15,499 views • 4 months ago

Masataka Yoshida's fit in '26 remains questionable, but there's no denying he was there when the team needed him most down the stretch in '25. Thru 9/1: ⚾️ 24-for-72 (.333 BA) ⚾️ .837 OPS ⚾️ 4% BB / 7% K ⚾️ .336 xwOBA ⚾️ 126 wRC+ His postseason wRC+ (228) led the Red Sox, too.

Masataka Yoshida's fit in '26 remains questionable, but there's no denying he was there when the team needed him most down the stretch in '25. Thru 9/1: ⚾️ 24-for-72 (.333 BA) ⚾️ .837 OPS ⚾️ 4% BB / 7% K ⚾️ .336 xwOBA ⚾️ 126 wRC+ His postseason wRC+ (228) led the Red Sox, too.

24,345 views • 8 months ago