He was 37 and put an 8 pound rehydration clause on Loma. He also said the size difference didn't play a part after the fight. The age difference between Loma and Rigo is the same age difference between Canelo and GGG and Canelo and Kovalev, who happen to be Canelo's two best wins. Rigo was past prime (like GGG and Kov were for Canelo) and undersized but he was still undefeated and statistically the least hit fighter in the sport going into the Loma fight. Even the 'moving up two weight classes' can be argued given that Loma had already moved up one himself. Loma started in his mid-20's at 126 and never missed weight, Rigo at 122.