Williams participated in the 2012 Rising Stars Challenge, as well as the 2012 NBA All-Star Weekend Slam Dunk Contest. Williams scored a season-high 27 points on February 28, 2012, in a win over the Los Angeles Clippers. He made 9 of 10 shots from the field and 4 of 4 from three-point range. He led the Timberwolves to victory over the New Orleans Hornets with what was then a career-high 28 points on March 17, 2013.