London 2012 - A kayak athlete stretches his quadriceps prior to squeezing into a small boat to compete in an Olympic sprint.

London 2012 - Team Jamaica's Shelly-Ann Fraser-Pryce takes gold in the women's 100m final. Fraser-Pryce became at Beijing 2008 the first Jamaican woman to win Olympic sprint gold.

London 2012 - Usain Bolt celebrates atop the podium after the Jamaican men’s team wins the 4x100m relay giving Bolt his third gold, one for each of his three Olympic sprint events.

17 Sep 2000: Jens Fiedler of Germany leads the German team, during qualifying for the Men's Olympic Sprint at the Sydney 2000 Olympic Games, held at the Dunc Gray Velodrome in Sydney, Australia. DIGITAL IMAGE Mandatory Credit: Darren McNamara/ALLSPORT

17 Sep 2000: Chris Hoy, Craig MacLean and Jason Queally of the Great Britain Men's Track Cycling Olympic Sprint Team on the podium after winning silver at the Dunc Gray Velodrome on Day Two of the Sydney 2000 Olympic Games in Sydney, Australia. \ Mandatory Credit: Doug Pensinger /Allsport

BEIJING - AUGUST 19: Jason Kenny of Great Britain competes with Chris Hoy of Great Britain in the Men's Sprint Finals in the track cycling event at the Laoshan Velodrome on Day 11 of the Beijing 2008 Olympic Games on August 19, 2008 in Beijing, China.

BEIJING - AUGUST 19: Rami Zur of the United States competes in his heat of the Flatwater Men's K1 500m kayak flatwater event at the Shunyi Olympic Rowing-Canoeing Park on Day 11 of the Beijing 2008 Olympic Games on August 19, 2008 in Beijing, China.

London 2012 - A courtside ball retriever takes a sprinter’s start position in preparation to grab the next finished point.

Nanjing 2014 - Liudmyla Luzan of Ukraine competes during the C1 Head to head sprint - Women final match of canoe-kayak at the Nanjing 2014 Youth Olympic Games in Nanjing, capital of Jiangsu Province, on August 24, 2014

Nanjing 2014 - Vadim Korobov of Lithuania competes during the C1 Head to head sprint - Men final match of canoe-kayak at the Nanjing 2014 Youth Olympic Games in Nanjing, capital of Jiangsu Province, on August 24, 2014.