Actually , Losing twice to the same opponent is very common in boxing, Say fighter A Beats fighter B in the first fight in the rematch fighter A usually wins even more impressively. something like 75% of the time , which makes sense because if you were at your best and could not win how you going to win in a rematch? I think the exceptions to the rule are if fighter A win the first fight via bad decision victory or if fighter B was sick that night of the first fight, but everything being equal. fighter B gets that A$$ kicked again