The check swing challenge system MLB has been testing will be great because it will create more offense

I think personally, if the bat got to an angle that it could have put the ball in play, fair, it is a swing

More offense and fewer arguments at the plate? Sign me up. Curious how umps handle the ones that still look obvious in slow-mo.

You're right but I hate the angle they're choosing, it's just so extreme. I'm not sure any baseball fan still alive would disagree.

If the bat crosses the plane of the plate IMHO it's a swing.

Will people actively try to lay down "swinging bunts"?

I believe the rule states, if there was intent to swing? At the umps discretion? Now, I do think and agree, crossing the outer trim of the plate, or going beyond a certain degree, should be considered an attempted swing, aka, a strike.

Votto says Diaz used that check-swing trick to try to buy a ball call.