No, it ended at 31. Or can you provide us with the well-known scientific breakdown of the exact age at which every single athlete ceases to be in their prime regardless of length of career, fighting style, accumulated injuries/damage, etc.? Fighters whose styles are predicated on speed and reflexes like Fedor and Cro Cop often become very quickly and very noticeably a step slower. After years of seeming like they're in the matrix, one day you tune in to see them fight and it looks like they're moving underwater. You can also always tell when fighters whose styles are predicated on being able to take a shot no longer have a chin, like when Chuck Liddell and Mark Hunt started getting knocked out left and right after years of walking through every opponent's best shots. It happens to everybody, but it doesn't necessarily happen the same way or at the same time. Gomi didn't even make it to 30 before his star began to fade, while Couture didn't even start his MMA career until 33. Everybody's different, but they all eventually lose a step, and almost everyone continues fighting beyond their best days. Some are still able to perform well and defeat great opponents, others fall off a cliff and go out on horrendous losing streaks, but if you're paying attention you can see when a fighter just doesn't have that same spark anymore.