U.S. Olympic sprint champion Crawford handed two-year ban
April 19, 2013 -- Updated 1447 GMT (2247 HKT)
American sprinter Shawn Crawford won 200 meters gold at the Athens 2004 Olympic Games.
- U.S. sprinter Shawn Crawford given a two-year ban by U.S. Anti-Doping Agency
- Crawford punished for failing to give his location for three drugs tests in last 18 months
- Crawford won 200 meter gold at the 2004 Olympic Games
- It is unclear whether Crawford will appeal the sanction
(CNN) -- Sprinter Shawn Crawford might have been coming to the latter part of his athletics career, but his failure to inform doping regulators as to his "whereabouts" has landed the Olympic gold medalist with a two-year ban.
The American, who sprinted to 200 meter gold at the Athens 2004 Games, has been sanctioned after failing to provide the United States Anti-Doping Agency (USADA) with a location for drug testing three times during the past 18 months.
The "whereabouts" rule requires athletes in advance to tell regulators where they are for one hour every day and make themselves available at that time for a drug's test.
The ban means results recorded or prize money won by Crawford on or after November 17, 2012 have been scratched.
CNN contacted Crawford's representative to ask if he will appeal the ban, but the agent was not immediately available for comment.
Read: "We are with you Boston"
Just six days after bomb blasts rocked the Boston Marathon, London will hold its own race, pledging to observe a 30-second silence in solidarity with U.S. victims.
London prepares for marathon ahead of Boston bombings
The forecasted cost of the Olympics and Paralympics is £8.921 billion ($14.236 billion). The English capital became the first city to host the Games on three occasions.
London's Olympic legacy in action
"Shawn Crawford of Culver City, Calif., an athlete in the sport of track & field, has received a two-year suspension for committing an anti-doping rule violation in which he failed to file his whereabouts information," read a USADA statement.
"Crawford failed to comply with the whereabouts requirements and, as a result, accrued three whereabouts failures within an 18-month period.
"A whereabouts failure for National Testing Pool athletes includes failure to provide required quarterly whereabouts filings and/or failure to be available for testing due to inaccurate or incomplete information provided by the athlete.
"USADA is responsible for the testing and results management process for athletes in the U.S. Olympic and Paralympic Movement, and is equally dedicated to preserving the integrity of sport through research initiatives and educational programs."
As well as gold in Athens, which was clinched with a time of 19.79 seconds, Crawford won a silver medal as part of the U.S. 4 x 100 meter relay team.
He was awarded the silver medal in the 200m final at the Beijing Games of 2008 after Churandy Martina was punished for outside of his lane.
According to the Associated Press, Crawford later gave his medal to Martina.
Part of complete coverage on
Photographer Danny Lyon spent three days with Muhammad Ali in 1972 and shares his best photos and memories of the champ.
March 4, 2014 -- Updated 2048 GMT (0448 HKT)
From LeBron James in a mask to spectacular cycling crashes -- check out some of the best images from the sporting world.
February 25, 2014 -- Updated 1254 GMT (2054 HKT)
With a growing audience boosted by the drama of ice hockey on show in Sochi at the Winter Olympics, can the sport capitalize on its popularity?
January 20, 2014 -- Updated 1125 GMT (1925 HKT)
Her paintings may sell for thousands of dollars, but she is best known for a modeling shot 50 years ago that helped launch a business empire.
January 9, 2014 -- Updated 1701 GMT (0101 HKT)
When the eye of the storm closes in most people head home -- but for these surfers it's a different story.
January 6, 2014 -- Updated 1445 GMT (2245 HKT)
Gareth Evans is a school teacher in South Africa. In 1983, he attended a "rebel tour" cricket match against the West Indies.
December 17, 2013 -- Updated 1507 GMT (2307 HKT)
In the wake of protests in his native Ukraine, heavyweight champion Vitali Klitschko has turned his back on boxing to focus on his political ambitions.
August 9, 2013 -- Updated 0920 GMT (1720 HKT)
The Olympics must use its global reach and immense popularity to help save a generation, says sporting icon Sergei Bubka.
August 7, 2013 -- Updated 1632 GMT (0032 HKT)
CNN's Fred Pleitgen exposes a history of German government-funded doping throughout the Cold War.
April 9, 2013 -- Updated 1628 GMT (0028 HKT)
A six-day run that covers more than 220 km through the scorching heat of the Sahara desert has been billed as the "World's toughest race."
April 10, 2013 -- Updated 1149 GMT (1949 HKT)
He plays the only sport approved by the Taliban, a game he learned as a war refugee in Pakistan.
April 4, 2013 -- Updated 1746 GMT (0146 HKT)
How do you like your sport? Blood, sweat, tears and a nailbiting finish, no doubt. But what about death?
April 5, 2013 -- Updated 0934 GMT (1734 HKT)
Disgraced doper Lance Armstrong's quest to take part in a swimming event in Texas appears to have been sunk before he's even hit the water.
Today's five most popular stories