The Giants Love to Bunt. Or Do They?

Coming into 2022, Mike Yastrzemski was something of a cipher. Was he a late bloomer who suddenly learned how to hit? From 2019 through the 2021 All Star break, he was excellent, to the tune of a .266/.350/.514 slash line, a 128 wRC+, and 48 homers in 932 plate appearances. Or was he old news, a flash in the pan that pitchers developed a counter for? In the second half last year, he hit .212/.281/.483, struck out nearly 30% of the time, and generally looked like the career minor leaguer he’d been before 2019.
This year, he’s been back on track, and it’s largely been due to a better on-base percentage. Some of that is striking out less; he’s turned in a career-low swinging-strike rate and career low strikeout rate to go along with it. Just as importantly, though, he’s doing better on balls in play, and doing so partially by bunting — something of a San Francisco specialty this year.
In the first 300 games of his career, Yastrzemski bunted ten times. That generally tracks; he’s not particularly fast and hits for power. Why would he do anything other than clock balls over the fence — or, in spacious Oracle Park, into triples alley and off the wall? In fact, you might think that 10 bunts was 10 too many, if it weren’t for the fact that he turned six of them into hits.
This year, he’s put that plan into overdrive, with three bunt hits already after a third of a season. He’s been part of a concerted San Francisco bunting effort so far this year. The team has gone after shifts that don’t respect bunting ability by targeting them early and often, and its captain, Brandon Belt, is something of a bunting enthusiast himself. In fact, the Giants lead baseball in bunt hits, with 11, despite having exactly zero of the 75 fastest runners in baseball this year, per Statcast’s sprint speed leaderboard.
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