Todd Witsken (1963–1998) was an American professional tennis player from Carmel, Indiana, who specialized in doubles and reached career-high rankings of World No. 4 in doubles and No. 43 in singles. His most stunning singles achievement came at the 1986 US Open, where he defeated five-time champion Jimmy Connors 6–2, 6–4, 7–5 in the third round—Connors' earliest exit from that tournament since 1973. In 1989, Witsken also made history at Wimbledon by playing a 5-hour-28-minute second-round match against Greg Holmes, which stood as the longest men's singles match at the event until the legendary Isner-Mahut marathon in 2010. Known for his distinctive style, he played with the MAD RAQ, an innovative racket with three-directional stringing inspired by snowshoe weaving, and retired just before the 1993 US Open. Tragically, Witsken passed away from brain cancer on May 25, 1998, at the age of 34, leaving behind four children and a tennis legacy that includes his nephew, rising professional star Ben Shelton.