Many thought this fight would serve as a rebound for Schaub, who was knocked out by Antonio Minotauro in his last UFC outing, but instead he was served up his second-straight KO defeat.
Schaub seemed a little too confident in his hands, charging in on Rothwell and getting in a wild striking exchange, and Rothwell was able to capitalize with a big left-hook that brought the fight to a halt.
This is a great win for Rothwell, who before tonight was not considered a serious threat in the heavyweight division.
What we'll remember about this fight:
The knockout—what else?
Rothwell landed a heavy left hook that put Schaub on queer street and followed it up with a bit of ground and pound. Herb Dean quickly stepped in and called the fight.
Schaub was left confused, staring up at the lights.
What we learned about Ben Rothwell:
He's not to be underestimated.
Many people don't take Rothwell seriously because of his portly physique, but he came to this fight in better shape than we've ever seen him and picked up the biggest win of his UFC career.
It's still way too soon to label Rothwell a contender, but tonight was a big step in the right direction.
What we learned about Brendan Schaub:
His chin is extremely suspect.
We've seen Schaub KO'd three times now in the UFC, and they've all been fairly devastating finishes.
In the heavyweight division, you need to be able to take big punches, and it doesn't look like Schaub can do that.
What's next for Ben Rothwell:
A fight with Travis Browne, who was also victorious tonight, would make sense.
What's next for Brendan Schaub:
The loser of Pat Barry and Lavar Johnson, perhaps.
Andrew Barr is a Featured Columnist for Bleacher Report and stand-up comedian. Check him out on Twitter @AndrewBarr8.