Nick Diaz’s MMA career has certainly been a historic one. Over the course of his nearly 15 year professional career, Diaz has fought some of the best fighters to ever compete in Mixed Martial Arts.

Along the way Diaz has also fought for some of the best MMA promotions in the world, including the WEC, Pride FC, Strikeforce, and of course the UFC. Diaz has also racked up numerous highlight reel moments, as well as finishes during his time spent in the cage.

Given the fact that he has fought MMA legends such as BJ Penn, Georges St. Pierre, Anderson Silva, and Robbie Lawler, Diaz believes he is in fact the Greatest Of All Time (GOAT).

He took to Instagram:

#Repost @bbj_recovery with @repostapp. ・・・ TRUE STORY💯 NOBODY HAS EVER FACED ANY TOUGHER COMPETITION THAN THE #GOAT @nickdiaz209 … My ninja Came to fight and was always looking for the finish #octagon #goat #nickdiaz 💯#bbj_recovery #ufc #mma #bellator #fighter #ifbb #bodybuilding #competitor #flex #beast #gym #follow #champion #training #muscle #coach #strength #martialarts #gainz #extrememartialarts #shredded #cardio #grind #lifestyle #nickdiazacademy

A photo posted by Diazbrothers209 (@diazbrothers209) on Dec 30, 2015 at 9:26am PST