On December 8, Mayo tied his career-high of 40 points in a game against the Houston Rockets. Two days later, he tied a career high of playing 52 minutes in a double-overtime loss to the Boston Celtics. In his first game against his former team, Mayo scored only 10 points on 27% shooting. On December 28, 2012, Mayo had a career high of 5 steals against the Denver Nuggets. On March 6, Mayo recorded a new career high of 12 assists against the Houston Rockets. After Nowitzki, the Mavericks' all-time leading scorer, returned, Mayo saw his scoring average dip. Mayo said, "I'm a scorer and can shoot the ball a little bit, but I like to be a playmaker. I like to try to take what the defense gives you and not just concentrate on scoring the ball. Find other guys."