5 - Demian Maia In a few months, Damien Meier will turn 38 years of age, but as of now, after dropping to WW, with a 6-2 record, he looks like an young and skilled prospect, hungry and dominant, having dominant wins over the likes of DHK, Ryan LaFlare, RIck Story and Jon Fitch. 4 - Vitor Belfort Despiste his recent loss againt The Chris, Vitor Belfort looks amazing for a 38 years old daddy. When he's not shaving his mohawk, he's anihhilating the likes of Luke Rockhold, Dan Henderson and Mike Bisping. 3 - Andre Arlovski 2 - Anderson Silva The Spider started his UFC run at 31, and dominated the sport till his 37, and even now, at the age of 40, he's considered one of the most dangerous guys ever. 1 - Fabrizio Werdum He destroyed Fedor and Velasquez. Period. And he's only 38.