LAUSANNE — The World Anti-Doping Agency (WADA) will not appeal banned American sprinter Tyson Gay's controversial one-year doping ban, it said Tuesday. The global agency said the ban, which has been widely criticized in Europe as too lenient, was “compatible with the World Anti-Doping Code.” Gay, the world's joint second fastest man, last month had accepted the one-year suspension by the US Anti-Doping Agency (USADA) after a 2013 positive test for an anabolic steroid. The ban was backdated to June 23, 2013, making the US 100 meters record holder eligible to return to running later this month. His first race will be a 100 meters at Lausanne's Diamond League meeting on July 3, organizers said Monday. “Lausanne's Athletissima has always been one of my favorite meets and I'm delighted to be making my comeback in Lausanne,” said Gay. Gay will come up against US rival Justin Gatlin, the world championship silver-medallist from last year who has the fastest 100m time this year of 9.87sec. Normally athletes receive a two-year suspension for their first major doping offense but under anti-doping rules the ban can be reduced for substantial cooperation. The US agency said Gay was eligible for such a reduction because the sprinter offered what it termed substantial assistance in his case. On Tuesday, WADA said it was satisfied with the decision. “After careful review and scrutiny of the full case file, WADA is satisfied that Mr. Tyson Gay provided substantial assistance to USADA in an appropriate fashion,” the global agency said in a statement to Reuters. “WADA will therefore not appeal USADA's decision which is compatible with the World Anti-Doping Code.” Officials of the International Association of Athletics Federations (IAAF), which also can appeal the US decision, declined comment, saying the matter remains in the hands of its doping review board to assess. IAAF president Lamine Diack, however, said last month he supported the World Anti-Doping Code rule that allows athletes to receive reduced sentences if they provide substantial assistance to anti-doping agencies. “In the fight against doping we have to use this,” Diack said in an interview at the inaugural IAAF World Relays in the Bahamas. “If someone gave really very good cooperation and give us the possibility to do more to fight doping, we have to do something.” In addition to the ban, Gay has returned the silver medal he won as a member of the US 4x100 meters relay team at the 2012 London Olympics. His former coach Jon Drummond has filed a defamation lawsuit against the sprinter, USADA and USADA chief Travis Tygart, claiming Drummond was falsely accused of supplying Gay with performance-enhancing drugs. USADA called the lawsuit “baseless.” — Reuters