William Felton Russell is an American retired professional basketball player. He is equally notable for his rebounding abilities. He led the NBA in rebounds four times, had a dozen consecutive seasons of 1,000 or more rebounds, and remains second all-time in both total rebounds and rebounds per game. He is one of just two NBA players, the other being prominent rival Wilt Chamberlain, to have grabbed more than 50 rebounds in a game. He set this record with Boston Celtics against Syracuse Nationals.