Can they wear different sizes? i remember hearing something during pac-morales 3 that pac wore bigger gloves or something in the 1st fight, but in the 2nd and 3rd fights, he wore punchers gloves. i dont know, haven't seen fight in while
Size (like brand) isn't a issue with boxing gloves, its the weight that matters. 10 oz is the standard here (154Lbs) but Mayweather wanted 8 oz.