The Throwbacks Among Us
I imagine you already know that big-league hitters in 2018 strike out an awful lot more than big-league hitters in 2008 did. You could probably guess, too, that they hit for a somewhat lower average and a little less power. Even though some of that power differential will even out as the weather heats up this summer — we’re not exactly comparing apples to apples, here — I think it’s a relatively uncontroversial opinion to say that the game has changed in the past decade:
| Year | BB% | K% | ISO | BABIP | AVG | OBP | SLG |
|---|---|---|---|---|---|---|---|
| 2008 | 8.7% | 17.5% | 0.152 | 0.300 | 0.264 | 0.333 | 0.416 |
| 2018 | 8.8% | 22.5% | 0.160 | 0.293 | 0.245 | 0.317 | 0.405 |
Furthermore, those changes in the way the game is played have forced us to adjust our understanding of what good, bad, and decent performances look like. We have had to reconcile ourselves to the notion that, although just 20 qualified hitters struck out more than 22.5% of the time in 2008, 50 are above that mark right now, and another 40 or so finished above it last year in a full season’s worth of data. Striking out nearly a quarter of the time doesn’t make a hitter an outlier anymore, and we’ve had to adjust our internal expectations for player performance accordingly.


