The rematch between Andy Ruiz Jr. and Anthony Joshua on Saturday is as compelling as it gets because of their first fight.
Ruiz, a replacement opponent known as much for his paunch as his ability, pulled off one of the great upsets by putting Joshua down four times and stopping him in Round 7 on June 1 at Madison Square Garden in New York City.
Can Ruiz do it again in Diriyah, Saudi Arabia, the site of the rematch? Or will Joshua have made the necessary adjustments and avenge his career-changing setback?
Of course, we can only imagine whether Ruiz-Joshua II will live up to the original. Some sequels are as good or better than the first fight, some fall short.
Here are 10 heavyweight rematches – or third fights – that remain in our consciousness for reasons unique to each of the fights.