Mark Tewksbury

Mark Tewksbury, born on 7 February 1968, is a Canadian former swimmer best known for winning the 100 metre backstroke at the 1992 Barcelona Olympics, where he passed the world record holder Jeff Rouse of the United States on the last stroke to win by six hundredths of a second. He had won a silver medal as a member of Canada's relay team at the 1988 Seoul Olympics, where he hung a bed sheet from his Olympic Village window reading Hero to Zero in 9.79, aimed at Ben Johnson after Johnson's doping disqualification. Raised in Calgary, he trained at the University of Calgary with coach Deryk Snelling, was awarded the Meritorious Service Medal in 1993, and hosted the first season of the Canadian documentary series How It's Made in 2001.