vaff87 wrote:The aging curves nowadays compared to the “steroid era” are certainly curious. For example, Luis Gonzalez, had his out-of-nowhere 57 HR season at the age Donaldson is now. I don’t like to assume all of these guys were on steroids, so I feel like there has to be more to it.
Suspect that steroids played a greater role in the eye-popping numbers, while amphetamines had a greater effect on longevity. The baseball season is so long, and such a grind, and having a big ol' pile of stimulants really helped.
The other factor is the increased velocity most pitchers are working with. Your batting eye doesn't go, your power generally doesn't fade that quickly, but your bat speed? When you need to wait back enough to differentiate between a 95 mph fastball and a 2500 rpm slider, every little bit of extra time before you commit is invaluable. What we're seeing, often, is that the first sign of decline is that K rates spike in a big way...our stars from 2015, each year through 2018:
Bautista: 15.9% > 19.9% > 24.8% > 27.8%.
Edwin: 15.5% > 19.7% > 19.9% > 22.8%.
Donaldson: 18.7% > 17.0% > 22.4% > 24.7%.
The more you're guessing, the more you're whiffing. And even when you're making contact, the odds increase that you'll fail to centre it.