Pacs results show that he is past his prime however in until the Ko punch in the last Marquez fight I actually thought Pac had got something back. His speed and in and out boxing were the best Ive seen from him in years but it appears he sacrificed that for punch resistance cuz his chin was as bad as its ever been and after that kind of KO fighters dont recover. He will be gunshy and if he isnt then his chin will crack from lesser punches when he is nailed again.
He had a good run but its over. 2 losses in a row is a sign but if he keeps trying to redeem himself and losing he will be as bad as Roy Jones Junior who should have learnt after his back to back losses to Tarver and Johnson but he chose to go on and keep losing.