Unseld's greatest accomplishment came during the 1977-78 season when he led the Bullets to their only NBA Championship. No Bullets player ranked in the top 20 in scoring but six players averaged in double figures. The Bullets finished in second place in the Central Division but defeated the Hawks, Spurs and 76ers to reach the NBA finals and defeated the Sonics in seven games to win the title. Unseld averaged 9.4 points and 12.0 rebounds during the playoffs and was named NBA Finals MVP. He was the only NBA Finals MVP to come off the bench in a playoff game. The lowest career scoring average for an NBA Finals MVP is 10.8 PPG by Wes Unseld.
Unseld's final season was in 1980-81 after nagging knee injuries made him give up basketball. Entering the 2009-10 season, Unseld was 10th all-time in total rebounds (13,769) and 6th all-time in rebounds per game (14.0). He is the Wizards (formerly the Bullets) leader in games (984), rebounds, rebound average, and assists (3,822),
He was enshrined into the Naismith Basketball Hall of Fame in 1988 and named one of the NBA's 50 Greatest Players in 1996.
In all, Unseld coached for seven seasons, compiling a 202-345 (.369) record. His only playoff appearance was his first season. Entering the 2009-10 season, his .369 win percentage is the lowest among coaches with at least 400 games.