Gunnar Nelson, 26 years old today, is a black belt in Jiu-Jitsu under Renzo Gracie and John Danaher.
He then travelled to Barcelona and had a great showing at the 2009 ADCC, finishing the open class division in fourth place after defeating the likes of Jeff Monson and David Avellan.
After that, the Iceland-born Nelson returned to his MMA career that he started in 2007.
Competing in the welterweight division, he is 13-0 and 4-0 in the UFC.
He is currently ranked #12 in the UFC welterweight ranking.
Here is a fun highlight video of Gunnar both grappling and in MMA.