Coming off of knee surgery, Hamill became sick. Hamill faced off against undefeated prospect Jon Jones on December 5, 2009, at and won by disqualification after Jones utilized multiple 12-6 elbows. The unified rules of mixed martial arts prohibit downward elbow strikes, and Jones was initially only penalized a point from the round. However, because Hamill could not continue due to a dislocated shoulder, Jones was disqualified for these strikes. Consequently, the tape was reviewed and showed that Jones' elbows further damaged Hamill's already bloody and lacerated nose. This marked the first time that Nevada has used its recently enacted instant replay rule, in which the referee's decision was supported by the commission which utilized a slow motion replay to review the elbows. Hamill contested the decision, stating after the fight that he "definitely didn't win" and Jones "definitely didn't lose".