Unfortunate news for the NBA family, as the Boston Celtics legend KC Jones has passed away. 

The Celtics released a statement confirming the devastating news.

Jones, who was a college teammate of Bill Russell at the University of San Francisco, where they won two NCAA titles, won 12 NBA championships. 

11 of them came with Boston, eight as a player, one as an assistant and two as a head coach.

Jones is also the only African-American coach other than Bill Russell to win multiple NBA championships.

''K.C. demonstrated that one could be both a fierce competitor and a gentleman in every sense of the word,'' the team said. ''He made his teammates better, and he got the most out of the players he coached. Never one to seek credit, his glory was found in the most fundamental of basketball ideals – being part of a winning team. The Celtics family mourns his loss, as we celebrate his remarkable career and life.''