Here's UFC heavyweight Alistair Overeem showing off his new surgically-repaired lip ... after his face was blasted open in a TKO loss to Jairzinho Rozenstruik.
Overeem's face was a bloody mess after the UFC on ESPN 7 event on Dec. 7th ... when Rozenstruik hit Alistair with a crushing right hook in the 5th round that ended the fight with only 4 seconds left.
Overeem was hospitalized after the fight and underwent a surgical procedure to stitch him up ... and ESPN's cameras captured the 39-year-old as he was healing up.
"It was a nice fight," Overeem said ... "It was a good scrap."
"I was winning all rounds, just doing my thing. Too fast of a stoppage if you ask me. I was not out. I was knocked down, getting right back up."
Overeem is the #8 ranked heavyweight in the UFC at the moment -- and seems eager to get back in the Octagon and fight again ... just as soon as he gets cleared.
Tough dude.