He was an NBA first round draft pick, being chosen 20th overall by the Seattle Supersonics, playing two seasons with them and then eight with the Denver Nuggets. During that time, he earned an NBA All-Defensive Second Team honor and would go on to serve as an assistant coach with the Charlotte Hornets and the Atlanta Hawks before becoming the head coach of the Denver Nuggets.  He had played his college basketball at Notre Dame, helping lead the Fighting Irish to the Final Four, and was selected for the 1980 U.S. Men's Olympic Team, although they did not compete due to the Americans' boycott of the Moscow Games. Many years later he received a Congressional Medal of Honor created especially for those athletes. Present day he does pre- and post-game TV for the Denver Nuggets game broadcasts, and he is the CEO and Co-Founder of the Gold Crown Foundation, a non-profit whose tagline is, "Preparing kids for the game of life."