Is Cody Bellinger’s Two-Strike Approach Sustainable?

Back in July, I dove into the pulled fly ball successes of Cody Bellinger and Isaac Paredes that led to them outperforming their Statcast expected statistics. Since then, I’ve paid particular attention to Bellinger. Much of that is due to his interesting free-agency case. His unique profile relative to previous free agents with this level of performance is fascinating. On the surface, 4.1 WAR and 134 wRC+ at age 27 from an athletic multi-positional player is typically deserving of a $150 million-plus contract. But Bellinger isn’t a typical player; the question of sustainability looms due to the nature of his performance, most notably highlighted by a 10th-percentile hard hit rate.
Doubting the stickiness of his performance is completely fair. Hitting the ball hard gives you more room for error; the further you are down the hard-hit-rate spectrum, the more reliant you are on other skills that are perhaps not as sticky. Spending nine figures on that kind of profile is scary! But the more I think about Bellinger’s profile, this question keeps popping back up in my head: if we hopped in a time machine and went to the year 2008, would we question for a second whether he deserves a big long-term deal? I know that’s a flawed thought, but it’s lurking in my brain because of the years of traditional coaching focused on the importance of putting the ball in play with two strikes and not worrying about what type of contact is made, or how hitting to contact and letting home runs happen by accident is the purest form of hitting.
But after thinking more, I reminded myself of how the data the public has access to now is useful for these exact reasons. We know better than we did 15 years ago about what variables have strong causal effects on performance and/or fluctuation — this can’t be ignored! We should want a hitter to make flush contact consistently, regardless of count. We should question and consider what makes Bellinger different or not.
Recently, MLB.com’s Mike Petriello investigated some of the questions around Bellinger, most notably his hard-hit rate and two-strike approach. Two months before that, Baseball Prospectus’ Craig Goldstein highlighted the concerns around Bellinger’s 90th-percentile exit velocity and how DRC+ hadn’t bought into his performance, particularly the home run output, because of the lack of hard hit. By DRC+, he ended the season at 112, a far cry from his 134 wRC+. In short, there has been plenty of pondering about Bellinger’s 2023 profile and whether it can be repeated. This piece will do largely the same thing, just from a different angle. Read the rest of this entry »