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.[4] 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, January 25, 1978).[5] He was inducted into the Pac-12 Hall of Honor and WSU's athletic hall of fame in 2006.[5]
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.[8] 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.[9] The NY Daily News named him the worst All-Star player ever after a fans voting.[10] Sadly, things fell apart for the Mavericks generally in the late 1980s and early 1990s as their core group was either traded away (like Aguirre) or squandered vast potential via personal problems (like Tarpley) and Donaldson became the target for many fans and even his teammates for the franchise's woes, making the end of his otherwise hugely successful tenure in Dallas inevitable.
In 1990 he was founder and CEO of a dating magazine named Eligibles. It was published for a brief period of time in Dallas-Ft. Worth before going out of business. [1]
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.
Upon retiring, Donaldson settled in the Seattle area, where he ran the Donaldson Clinic, a physical therapy business in Mill Creek, Washington, until February 2018.[14] 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.[15] In 2010, Donaldson joined the College Success Foundation as the Director of the Tacoma College Success Foundation.[16]
