In response to southpaw777's comment:
In response to EnchiladaT's comment:
I always thought 28-33 were prime.... Dwight Evans was the first player that caused me to start poking around to which I found many players had their best years 28+ not -28.
exactly Burr...
Hitters peak about the age 30 and in decline at age 33...Some things peak earlier like SLG 2b & 3b at age 28. BB rates peak about age 32, OBP about age 30. So yes, peak years for hitters are 28-32. The best years to get are ages 29-30...
For pitchers its much different. K's rates peak about age 24 and BB rates about age 32 and ERA about age 29. Besides K rates its about the same for pitchers...
I've told Softlaw (and others) before that there is no need to guess on these issues. They can be easily researched, and when they are proven wrong, it makes them look foolish.
To be honest, I thought the peak was 27, but of course, I would've looked it up before posting that.
And +1 on giving the breakdown.