Kimbo Slice is now 4-0 in boxing. That said, his post-MMA career isn't exactly picking up a head of steam. The Florida-based brawler beat Brian Green at a small show in Springfield, Missouri, and needed a last-second knockout to pull out the win.

According to reports on the scene, Green was likely up on the scorecards as the final seconds ticked away. And according to many viewers of the video, which can be seen after the jump, the final seconds are a bit controversial.

With time running out, Slice scores with a right hand and then a following left hook, at which point Green crashes down to the mat unconscious. A look up at the clock shows there were just 3.3 seconds remaining.

It would be irresponsible to suggest that the late KO looked fishy, so we'll leave that for you to decide for yourself. The early reactions, though, aren't so favorable. Whether that's due to Slice's infamy or the actual punch that closes the show is up for debate. That said, we've seen worse finishes when it comes to lower-level boxing, so it's all conjecture at this point, leaving Kimbo celebrate his win.

For the record, Green is a mixed martial artist who weighed in at 223 pounds despite competing in MMA primarily as a middleweight. Green is 27-17 in MMA, with his most notable win coming against Nik Lentz back in 2006. The fight against Slice was his boxing debut.

Slice weighed in at 245.6 for the bout.