Tyson Gay's contract with adidas has been suspended following the American sprinter's reported failed drugs test, it was announced today.
Adidas confirmed the deal with the 30-year-old athlete has been suspended after the sportswear giant invoked a clause in its contract dealing with doping.
Gay is waiting for the results of his B sample from the United States Anti-Doping Agency amid reports he tested positive for a banned substance.
Reports of a failed test by Gay, the fastest man in the world this year, came just hours before it was confirmed Jamaican sprinters Asafa Powell and Sherone Simpson had submitted positive tests for a banned stimulant.
Adidas said in a statement: "adidas and Tyson Gay have been partners since 2005 and during this time he has been a great ambassador for the sport of track and field and our brand.
"We are shocked by these recent allegations, and even if we presume his innocence until proven otherwise, our contract with Tyson is currently suspended.
"Adidas has a clear policy on doping and drug use - each of the agreements with our athletes include a clear clause which states that the agreement shall be terminated by adidas if the athlete is found guilty of the possession or use of drugs or any other prohibited substance by the relevant governing sports body having jurisdiction over the athlete."
"It's always disappointing when you hear bad news but at the same time this is confirmation that out-of-competition testing really is effective" - Jacques Rogge
IOC president Jacques Rogge said the tests showed out of competition testing was working.
Rogge told www.aroundtherings.com: "I was surprised and disappointed but I feel strengthened by the measures that have been taken by USADA, by WADA and the world of sport in general.
"It's always disappointing when you hear bad news but at the same time this is confirmation that out-of-competition testing really is effective.
"I think that's what we have to remember about that. To continue to do out-of-competition testing, testing, testing all the time and storing blood profiles and freezing the samples and re-examining them within the eight years statute of limitation."