Gunderson fought and defeated UFC newcomer and Canadian kickboxing champ Mark Holst.
Gunderson instead faced returning UFC veteran and former number 2 world ranked lightweight Yves Edwards,[5] and lost the fight via unanimous decision.
Gunderson made his World Series of Fighting debut on June 14, 2013, against UFC vet Dan Lauzon at WSOF 3.
After winning his promotional debut with a fight of the night Gunderson Faced Team Alpha Male standout and coach Justin Buchholz.
Being a 3-1 underdog Gunderson battered Buchholz with strong hooks and take downs eventually winning by Kimura in the 3rd round.