Jerome Miro Imagn Images via Reuters Connect

If you’ve been following the postseason closely, you probably know why every Guardians player celebrates a single by turning to their dugout and flashing their teammates a thumbs down. “When a Guardians hitter notches a single, he stands on first base, peers toward the dugout and flashes either two thumbs up or two thumbs down, depending on how hard he struck the ball.” That’s how The Athletic’s Zack Meisel described the celebration back in July, in an article documenting the remarkable way that Steven Kwan was turning things around after a dismal start to the season.

The celebration is actually more specific than that, though. The Guardians aren’t just indicating whether they hit the ball hard. They’re indicating whether it met Statcast’s official threshold for a hard-hit ball. Travis Bazzana explained the premise to some sort of FanDuel-affiliated Instagram influencer at the All-Star Game back in July:

“Yeah, so it’s funny. When you hit it hard, if you hit it over 95 mph, you’re supposed to give a thumbs up. And if you hit it a little soft, like dink hit or groundball, it’s a thumbs down. The joke in today’s game is you want to hit the ball hard, you want to hit the ball in the air. And so it’s like, ‘Oh it’s a bad hit if I hit it soft.’ It’s kind of a funny joke.”