Swimmer Tricia Duncan is the older sister of Tim Duncan, who professionally played what sport for 19 years
Tim Duncan Timothy Theodore Duncan (born April 25, 1976) is an American retired professional basketball player who played his entire 19-year career with the San Antonio Spurs of the National Basketball Association (NBA). Widely considered to be the greatest power forward of all time, he is a five-time NBA champion, two-time NBA MVP, three-time NBA Finals MVP, NBA All-Star Game MVP and NBA Rookie of the Year. He is also a 15-time NBA All-Star and the only player to be selected to both the All-NBA and All-Defensive Teams in all of his first 13 seasons.
Duncan Laing Andrew James Duncan Laing CNZM OBE (20 June 1933 – 13 September 2008), generally known as Duncan Laing, was a New Zealand swimming coach based in Dunedin. He coached Olympian Danyon Loader, winner of two gold medals at the 1996 Atlanta Olympics and a silver medal at Barcelona in 1992, and Philip Rush, current world record holder for the fastest two and three way swim of the English Channel. He began teaching at Moana Pool in 1966, and over forty years training in Dunedin included 11 Olympic athletes. In 2003, Michael Phelps visited New Zealand to train under Laing. He had since retired from professional coaching, and received treatment in 2006 for melanoma on his leg and a brain tumour.