He made his lightweight debut in his next fight on February 21, 2009, at "UFC 95" against Joe Stevenson. Training for the bout Sanchez worked with professional boxers Joey Gilbert and Lupe Aquino, Brazilian grappling experts Xande and Saulo Ribeiro and wrestling coach Bob Anderson. Although Stevenson pressed the action throughout the bout, Sanchez landed the better strikes and won by unanimous decision. Diego credits Tony Robbins for giving him mental preparation for this latest fight, and was seen entering the bout chanting "Yes!" repeatedly. This would go on to inspire the "Yes!" chant, popularized by professional wrestler, Daniel Bryan.