Kimbo Slice passed away on Monday (June 6), after being hospitalized. He was just 42 years old.

As stunned fans and peers continue to express their shock, we take a look back on his career with a short clip showcasing some of Kimbo’s career highlights, inside both the cage and the boxing ring.

Slice rose to fame on the Internet, as videos of his backyard brawls racked up millions of views on Youtube. He eventually attempted to go mainstream and fight professionally as a mixed martial arts fighter, beginning with a stint with now-defunct promotion EliteXC, where he served as its star… up until unknown fighter Seth Petruzelli knocked him out in 14 seconds on Oct. 4, 2008.

Slice eventually fought in the UFC, after competing on its reality series, The Ultimate Fighter. He ultimately fought for the UFC twice, compiling a 1-1 record.

After a brief boxing career, where he compiled a 7-0 record (against journeyman fighters), he embarked on a second stint in MMA, when he signed a contract with Bellator MMA.

Slice last fought at Bellator 149 on Feb. 19 in Houston, defeating Dada 5000, via third round TKO, and was scheduled to headline Bellator 158 on July 16 in London against James Thompson.

Kimbo had a 5-2 professional record with four TKOs.