Amateur career

Donaldson, a 7'2" center, starred at Luther Burbank High School and Washington State in the late 1970s. In his 4 seasons at WSU he averaged 8.5 points per game and 8.1 rebounds per game in 84 games. As of April 2015 he was the all-time leader in career blocked shots (176), blocks average (2.1), single-season blocks (82 in 1977-78), single-season blocks average (3.0 in 1977-78) and single-game blocked shots (eight versus Stanford, Jan. 25, 1978). He was inducted in WSU's athletic hall of fame in 2006.

Professional career

After being drafted by the Seattle SuperSonics in the 1979 NBA draft he signed a contract with 3A Antonini Siena of the Italian Serie A.

Donaldson played three seasons with Seattle before moving on to the San Diego (later Los Angeles) Clippers. During the 1984-85 NBA season, he led the league in field goal percentage at 0.637 — still one of the ten highest percentages in NBA history.

Donaldson joined the Dallas Mavericks in 1985. He joked with teammates that leaving the lowly, dysfunctional Clippers for the Mavericks was like dying and going to Heaven. He had his finest years while playing for the Mavericks, providing rebounding and shot-blocking to complement Dallas' star-studded line-up, which included Mark Aguirre, Rolando Blackman, Roy Tarpley, Derek Harper, Sam Perkins, and Brad Davis. Donaldson himself earned a spot on the 1988 All-Star Team during a season in which the Mavericks reached the Western Conference Finals before losing to the Los Angeles Lakers. The NY Daily News named him the worst All-Star player ever after a fans voting.

After brief stints with the New York Knicks (traded midway through 1991-92 for Brian Quinnett) and Utah Jazz (49 games in two seasons combined) in the early 1990s, injuries forced Donaldson into retirement from the NBA. He left the league in 1995, with 8,203 career points, 7,492 career rebounds and 1,267 career blocks. He played in 957 NBA games without ever attempting a 3-point shot, a record among players from the 3-point era.

On August 1, 1993 he signed for Greek Basket League club Iraklis. He played in 30 games for Iraklis averaging 12.1 points per game, 12.2 rebounds per game and 2.2 blocks per game. In the 1996-97 season he played for Caja San Fernando averaging 3.5 points and 3.6 rebounds per game. He also had spells with Snai Montecatini (Italy, 1997-98, for only six games), Breogán Lugo (Spain, two stints, in 1998 and 1999) and Gymnastikos S. Larissas (Greek Second Division, 1998-99), retiring for good at the age of 41.

Personal

Upon retiring, Donaldson settled in the Seattle, Washington area, where he runs the Donaldson Clinic, a physical therapy business in Mill Creek, Wash. He is also a motivational speaker.

In 2009, Donaldson ran for the non-partisan office of Seattle mayor and came in fourth among the candidates. In 2010, Donaldson joined the College Success Foundation as the Director of the Tacoma College Success Foundation.

[ Source: Wikipedia ]