adidas suspended their sponsorship with sprinter Tyson Gay today, Monday, July 15, 2014, London local time, per a well written article on the Reuter’s service .
“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.”