Originally Posted by dougdirt
It isn't that he can't, it is that he isn't all that likely to do so. Offensively and defensively, players tend to work on a bell curve. For offense, the bell tops out at age 27 or 28. Cozart is there, right now. Defensively, the bell tops out around 24-25. Cozart is already on the wrong side of that. Historically speaking, players at his age simply don't show dramatic improvements.
Begging the question on several fronts.
Was 2012 his norm? Was it in line with his major league/minor league projections? How much of 2012 numbers are attributed to randomness and could fluctuate positively without any additional "improvement"?
Who says a player regresses defensively post 25? While I can see the physical peak aspect, that doesn't mean a late 20s to early 30s player doesn't keep his defensive play in tact, or even improve, by knowing the game better, i.e. positioning, anticipation. It is counter intuitive to say a guy has done as well as he is going to do defensively by the time he is 25.