Swimmer Tricia Duncan is the older sister of Tim Duncan, who professionally played what sport for 19 years
Tricia Duncan Patricia "Tricia" Duncan (born August 21, 1973) is a retired swimmer for the U.S. Virgin Islands who participated in the backstroke at the 1988 Summer Olympics. Duncan finished 34th in the 100 m backstroke and 30th in 200 m backstroke. She is the older sister of NBA basketball player Tim Duncan. Duncan attended Swarthmore College.
Ken Duncan (American football) Ken Duncan is a former punter in the National Football League.