Mustafa Wasajja's journey through professional boxing began on March 31, 1977. He emerged from an accomplished amateur background that included a gold medal at the 1974 African Amateur Championships in his native Kampala. The southpaw from Uganda would become one of his nation's pioneering professional fighters during a transformative era for African boxing.
Operating primarily out of Copenhagen, Denmark, Wasajja built an impressive undefeated streak between 1977 and 1982. His most notable victory came against former world light heavyweight champion Bob Foster on September 9, 1978, when he forced the legendary American to retire in the fifth round. While Foster was past his prime at 40 years old, the victory helped establish Wasajja's credentials in the international boxing scene.
Wasajja's perfect record and steady rise through the rankings eventually earned him a shot at WBA Light Heavyweight champion Michael Spinks in Atlantic City on February 13, 1982. The title challenge marked Wasajja's first fight in America but ended in a sixth-round knockout loss. This defeat began a three-fight slide that would conclude his career, losing decisions to Tony Mundine in France and suffering a third-round knockout against Lottie Mwale in Lusaka while challenging for the Commonwealth Light Heavyweight title in March 1983.
His professional career ended with a record of 25-3-0, with most of his victories coming by decision rather than knockout. Wasajja competed during what many consider a golden era for light heavyweights, sharing the division with talents like Michael Spinks, Dwight Muhammad Qawi, Eddie Mustafa Muhammad, and Matthew Saad Muhammad.
The fighter's post-boxing life took a difficult turn. After attempting business ventures in Kenya with fellow Ugandan boxer Ayub Kalule, Wasajja eventually returned to Kampala, where he lived in challenging circumstances. His health deteriorated as he battled Parkinson's disease in his later years, leading to his death on April 26, 2009, at age 55 near Kampala.
Wasajja's legacy extends beyond his own accomplishments. He was part of a vanguard of Ugandan fighters who helped establish their nation's boxing reputation internationally, paving the way for future champions like Ayub Kalule, Cornelius Boza-Edwards, and John "The Beast" Mugabi. His influence continues to be remembered in African boxing circles, with Zambian champion Charles Chisamba even adopting the nickname "Wasajja" in his honour.