Bobby was only a sophomore in 1972 when he played for the Manual Rams in the Class AA lHSA basketball tournament. They finished 4th. Bobby was a little-used guard then, giving a starter named Wayne McClain an occasional breather. By his senior year, Bobby was an all-stater.
Coming to Bradley, Humbles slowly made his mark as a starting guard. By his junior season, he teamed with a walkon named Roger Phegley to become one of the three best backcourt tandems in Bradley basketball history.
Bobby ended his four-year Hilltop career as the Braves' 10th leading scorer with 1,262 points. During the 1976-77 and the 1977-78 seasons he led the team in assists and in 1977-78 he led them in steals.
In 2003, Bobby Humbles was named to Bradley's all-l970s squad.