He placed 2nd at the 2007 Tampa Am and winning the contest in 2004. Sierra won the best trick competition for the 2007 Tampa Am with a nollie frontside bigspin to frontside lipslide. Fellers earned his first magazine cover on Euro Sugar magazine. He also turned pro for Foundation Skateboards in 2007.[clarification needed]
He is currently ranked third place in the NWM Underground rally circuit, behind Isaac Johnston (first place), and Zach Dowler (second place).