From 2014-2019, Ontario’s Theodorou competed 11 times in the UFC. His career in the international spotlight kickstarted when he won “TUF Nations” with a knockout of Sheldon Westcott. He went on to defeat names like Cezar Ferreira, Sam Alvey, Eryk Anders, and Trevor Smith. His only three promotional losses came against perennial contenders Thiago Santos, Brad Tavares, and Derek Brunson.