Out of curiosity, what are prime years now considered to be? I've always heard they were 27-31 (or 32) for the majority of players and hadn't heard that they changed them. But now I keep hearing that Headley apparently is barely still in his prime years. When did that line of thinking change, and what are prime years now? Mid to late 20s, I believe. Anyone who's turned 30 is generally considered to be past the prime or at least about to finish it, I believe.