King was known for his defensive skills and his ability to rebound the ball. He was a solid role player throughout his career, averaging 6.7 points and 4.0 rebounds per game. He was also a good free throw shooter, making 78.4% of his attempts from the line.
After retiring from playing basketball, King began a career in basketball management. He worked as an assistant coach for the Indiana Pacers from 1999 to 2000 before being hired as the general manager of the Philadelphia 76ers in 2003.
As general manager, King was responsible for building the 76ers into a playoff team. He made several key moves, including trading for All-Star guard Allen Iverson and signing free agent forward Chris Webber. Under King's leadership, the 76ers made it to the playoffs in five consecutive seasons from 2000 to 2005.
In 2007, King was hired as the president and general manager of the New Jersey Nets. He was tasked with rebuilding the team, which had struggled in recent years. King made several big moves, including trading for All-Star point guard Deron Williams and signing free agent forward Gerald Wallace.
Despite King's efforts, the Nets struggled to make the playoffs during his tenure. In 2010, he was demoted to just the general manager position, and in 2012, he was fired from the team.
After leaving the Nets, King worked as a basketball analyst for ESPN before being hired as the vice president and assistant general manager of the Philadelphia 76ers in 2016. He was responsible for helping to rebuild the team, which had been struggling in recent years.
Overall, Billy King had a successful career in basketball, both as a player and as a manager. He was known for his defensive skills and his ability to rebound the ball, and he helped to build several successful teams during his time as a general manager.