Depending on your timeline, you may know the name of Bob Bass for one of the many hats he wore for the Spurs over his twenty year career. He served as head coach for the ABA Spurs from 1974-76. Possibly his best known legacy at this point was shifting George Gervin from small forward to shooting guard, a move that would make the player a legend.
In addition, he served as assistant coach once the Spurs were in the NBA and on three occasions was interim head coach. As for the front office, Bass served as general manager, vice president of basketball operations, and assistant to the chairman.