"He was winning until he got knocked out" why do people say this?

[brettWall]

I normally root for the underdog, just like many people do, especially when I know little about the boxers. Molina was clearly the underdog in the Bey fight. He had every reason to quit in the second half of the fight, but he didn't and his coach won't let him as the ring doctor wanted him to, if I remember correctly. Then bam, things changed quickly in the last round of the fight.

So could we just ignore the rest of the rounds and focus on the last round?