Walton played a career high 80 games for Coach KC Jones and the Celtics during the 1985–86 season. Walton averaged 7.6 points, 6.8 rebounds, 2.3 assists, and 1.2 blocks in 19 minutes, and finished with a career-high 56.2 field goal percentage. Providing a reliable backup to Kevin McHale and Robert Parish, and playing alongside Larry Bird, Danny Ainge and Dennis Johnson, Walton received the 1986 NBA Sixth Man of the Year Award en route to the NBA championship. He became the only player to have won an NBA Finals MVP, Sixth Man Award, and regular season MVP.