Canadian Olympians who are calling it quits

Jessica Zelinka of London, Ont. in the 200-metre heptathlon heats at the 2012 London Olympics, Friday, Aug. 3, 2012. THE CANADIAN PRESS/HO, COC - Mike Ridewood

Canada's Jessica Zelinka reacts to her finish in the women's 100-metre hurdle final at the Olympic Stadium during the Summer Olympics in London on Tuesday, August 7, 2012. THE CANADIAN PRESS/Sean Kilpatrick

LONDON, ENGLAND - AUGUST 03: Dylan Armstrong of Canada competes in the Men's Shot Put Final on Day 7 of the London 2012 Olympic Games at Olympic Stadium on August 3, 2012 in London, England. (Photo by Alexander Hassenstein/Getty Images)

LONDON, ENGLAND - AUGUST 03: Dylan Armstrong of Canada competes in the Men's Shot Put Final on Day 7 of the London 2012 Olympic Games at Olympic Stadium on August 3, 2012 in London, England. (Photo by Michael Steele/Getty Images)

Triathlete Simon Whitfield is wrapped in the Canadian Flag after he was named the official flag bearer for Canada at the 2012 London Olympics, on Parliament Hill, Thursday July 12 2012 in Ottawa. THE CANADIAN PRESS/Fred Chartrand

Canada's Simon Whitfield talks to reporters after crashing and retreating from the men's triathlon at Hyde Park during the Summer Olympics in London on Tuesday, August 7, 2012. THE CANADIAN PRESS/Sean Kilpatrick

Canada's Simon Whitfield exits the water after the swim portion of the men's triathlon at Hyde Park during the Summer Olympics in London on Tuesday, August 7, 2012. Whitfield later crashed during the bike protion and had to drop out of the race. THE CANADIAN PRESS/Sean Kilpatrick

Canada's Simon Whitfield gets prepared in the transition area for the men's triathlon at the 2012 London Olympic Games, August 7, 2012. Whitfield crashed on the bicycle portion of the race and withdrew from the competition. COC Photo: Jason Ransom

LONDON, ENGLAND - AUGUST 09: Saori Yoshida of Japan (blue) and Tonya Lynn Verbeek of Canada compete in the Women's Freestyle 55 kg Wrestling on Day 13 of the London 2012 Olympic Games at ExCeL on August 9, 2012 in London, England. (Photo by Quinn Rooney/Getty Images)

LONDON, ENGLAND - AUGUST 09: Saori Yoshida of Japan (blue) and Tonya Lynn Verbeek of Canada compete in the Women's Freestyle 55 kg Wrestling on Day 13 of the London 2012 Olympic Games at ExCeL on August 9, 2012 in London, England. (Photo by Quinn Rooney/Getty Images)

LONDON, ENGLAND - AUGUST 09: Silver medalist Tonya Lynn Verbeek of Canada in the Women's Freestyle 55 kg Wrestling on Day 13 of the London 2012 Olympic Games at ExCeL on August 9, 2012 in London, England. (Photo by Quinn Rooney/Getty Images)

Canada's Brent Hayden warms up to compete in a men's 100-meter freestyle heat at the 2012 Summer Olympics in London on Tuesday, July 31, 2012. THE CANADIAN PRESS/Sean Kilpatrick

LONDON, ENGLAND - AUGUST 01: Brent Hayden of Canada celebrates bronze in the Mens 100m freestyle final on Day 5 of the London 2012 Olympic Games at the Aquatics Centre on August 1, 2012 in London, England. (Photo by Ian MacNicol/Getty Images)

LONDON, ENGLAND - AUGUST 04: Emilie Heymans of Canada competes in the Women's 3m Springboard Diving Semifinal on Day 8 of the London 2012 Olympic Games at the Aquatics Centre on August 4, 2012 in London, England. (Photo by Clive Rose/Getty Images)

LONDON, ENGLAND - AUGUST 04: Emilie Heymans of Canada competes in the Women's 3m Springboard Diving Semifinal on Day 8 of the London 2012 Olympic Games at the Aquatics Centre on August 4, 2012 in London, England. (Photo by Clive Rose/Getty Images)

LONDON, ENGLAND - JULY 29: Bronze medallists Emilie Heymans and Jennifer Abel of Canada pose on the podium during the medal ceremony for the Women's Synchronised 3m Springboard final on Day 2 of the London 2012 Olympic Games at the Aquatics Centre at Aquatics Centre on July 29, 2012 in London, England. (Photo by Al Bello/Getty Images)

LONDON, ENGLAND - AUGUST 07: Alexandre Despatie of Canada competes in the Men's 3m Springboard Diving Semifinal on Day 11 of the London 2012 Olympic Games at the Aquatics Centre on August 7, 2012 in London, England. (Photo by Clive Rose/Getty Images)

LONDON, ENGLAND - AUGUST 07: Alexandre Despatie of Canada competes in the Men's 3m Springboard Diving Final on Day 11 of the London 2012 Olympic Games at the Aquatics Centre on August 7, 2012 in London, England. (Photo by Adam Pretty/Getty Images)

LONDON, ENGLAND - AUGUST 01: Clara Hughes of Canada competes during the Women's Individual Time Trial on day 5 of the London 2012 Olympic Games on August 1, 2012 in London, England. (Photo by Stefano Rellandini - IOPP Pool /Getty Images)