Exactly. But these are professional baseball players. Kershaw was coming back from an injury. Tender. Old. Brittle. And he hadn't pitched as many innings is his rehab. And he stretched out more in the Show. Sure, a vet. He has stretched out before. But more innings/pitches is a progression,
I generally might agree with you, but in this case, this is the time to get at least one more batter. Lots of pitchers have a rough battling inning, and can find it the next, and late in his outing. It really doesn't make a lot of sense to me, to think that a young person can't pitch a few more pitches like the old guys. Steady progression, no matter when it is. It is still the same game and mound.