Everything I've read says that 26 is peak age. 26-29 is typically peak time frame, and guys will on occasion have career years later in life. But expecting a player to be significantly better than he already is at 26 is unwise, especially when that player has been the same terrible player each and every year of his professional career. He's shown absolutely no signs that he's capable of more. I think a 600 OPS is probably low, although I haven't noticed many people writing that as his peak. I think 650 is probably more likely, maybe a bump up to 675 or possibly 700 some year, but all of that is still god awful. Exactly..he is at the start of his peak age, exactly as Tiger stated-he's entering the prime of his career. He's been terrible throughout his career, but he definitely hasn't been the same at age 22-.232/.253/.303 at age 23-.251/.282/.315 (29 point jump in OBP, and 12 point jump in slugging) age 24-.288/.330/.381 (48 point jump in OBP, and a 66 point jump in SLG) age 25 is a completely washed out year because of the injuries-optimists will point out his .342/.388/.425 numbers in April and May, while others will look at the entire injury filled season as a downgrade of .257/.302/.322 (notice-I am not comparing him to Lee's production here-but looking at this season's overall numbers is like looking at Lee's 2006 numbers so far-the numbers with the injury and the numbers without the injury are dramatically different) age 26-Overall-.259/.314/.341-with a bad BABIP He may still not even be close to an average major league hitter, but he hasn't been consistently the same. He was a shortstop brought up only for his defense whose bat consistently got better before he got hurt-and now we will have to see if he can continue to get better as he enters his prime. You are grossly exagerating the improvement he's had. His OPS+ has been as follows for ages 21-25: 69 52 61 88 68 That's a career average of 69, with one downside outlier and one upside outlier. He's not poised for a breakout and he's not "likely to improve". We have probably seen the best we will see out of him, and it was probably that 88 in 2004. His injury is not a free pass to pretend he's capable of more, it's a pretty good sign that he will never be the best he could have been if he was always 100% healthy. The average peak year is 26, it can be 24/25, or 28/29, and a guy can pull a career year out of his butt at 32. But it's incorrect to state that he is likely to improve from what he already is, because he is already in his most likely peak time frame. The most likely scenario is that he will stay within the range he has already established as a major leaguer, which varies from absolute crap to just bad.