Michael Jordan engaged in several legendary, hard-fought rivalries throughout his illustrious career, with his most fierce and combative opposition coming against the Detroit Pistons during the late 1980s and early 1990s. The "Bad Boys" Pistons infamously deployed their physical, intimidating "Jordan Rules" defensive strategy to batter and frustrate Jordan in the postseason year after year. Overcoming that physical barrier required immense mental and physical maturation from Jordan and his Chicago Bulls teammates before they finally swept Detroit in 1991 to capture their first championship.