Especially among Red Sox pitchers: Rick Porcello cried; David Price cried, twice.
Here's what Price said after the clinching game, as reported by The Ringer: “My confidence was never altered through however many seasons I’ve been to the playoffs, however many times I’ve failed in October, however many times I failed in the regular season or against the Yankees. I always had belief in myself and my abilities.”
Growth mindset? Doesn't seem so. Rather, another way to think about the ace's irrational confidence may be as his fixed mindset hardening into an irresistible force, his gritty tenacity fueling dogged repetition more-so than resilient growth. Or what if he's an exception that proves a learning rule, smashing up against failure until he broke through while others might instead grow and change?
Check out this advice his college pitching coach gave him over a decade ago: "You never need to change the way that you play this game." Compare that to the prevailing flavor these days in education... Almost makes me want to cry.