COLORADO SPRINGS, Colo. -- Sprinter Tyson Gay accepted a one-year suspension Friday after testing positive for a banned substance nearly a year ago and returned the silver medal he won in the mens 400-meter relay at the 2012 London Olympics. The US Anti-Doping Agency announced that Gays one-year ban began June 23, the day his sample was collected at the U.S. championships. His sanction is subject to appeal by International Association of Athletic Federations (IAAF) and by the World Anti-Doping Agency, USADA said Friday. As part of the penalty, Gay, the American record-holder in the 100, also accepted loss of results dating to July 15, 2012, the date of when he first used a product that contained a banned substance. He was a member of the relay team at the London Games that finished second to a Jamaican team anchored by Usain Bolt. The Americans set a national record with a time of 37.04 seconds. Gay has given his medal back to the United States Olympic Committee. USADA said in a statement that upon receiving notification of his positive tests, Gay voluntarily withdrew from all competition prior to the 2013 world championships in Moscow and has not competed since. The 31-year-old Gay couldve been given a penalty twice as long, but received consideration after assisting USADA in the investigation into his positive test. USADA said he tested positive for the presence of an exogenous androgenic anabolic steroid. "We appreciate Tyson doing the right thing by immediately withdrawing from competition once he was notified, accepting responsibility for his decisions, and fully and truthfully co-operating with us in our ongoing investigation into the circumstances surrounding his case," USADA CEO Travis Tygart said in a statement. Gay was at the top of his game at the 2007 world championships in Osaka, Japan, capturing gold in the 100, 200 and 400 relay. That was just before the emergence of Bolt, whos dominated the sprint scene ever since. Meanwhile, Gay has dealt with one injury after another, including strained groins, hamstring tightness and hip surgery. He set the American 100 record in 2009 when he finished in 9.69 seconds. Bolt has the world record at 9.58. Before last season, Gays test results never raised any red flags. He even took part in USADAs "My Victory" program -- in which athletes volunteer for enhanced testing to prove theyre clean. He tested positive out of competition last May. A month later, Gay recorded a positive at the U.S. championships, where he won the 100 and 200 metres, and was notified. He surrendered his spot at worlds. Gay said at the time: "I dont have a sabotage story. I dont have any lies. I dont have anything to say to make this seem like it was a mistake or it was on USADAs hands, someone playing games." In a statement released by USA Track and Field, CEO Max Siegel said the organization is "gravely disappointed any time an athlete uses performance-enhancing drugs, and Tyson Gays case serves as a lesson about the consequences of making poor decisions. We appreciate that Tyson accepted responsibility and has assisted USADA by providing information to help battle the use of PEDs." There are no major international meets in track this summer, but U.S. championships will be held June 26-29 in Sacramento, California. And while Gay could become eligible for that meet, the disqualification of his results dating to 2012 has taken away his qualifying time for the meet. He could petition the track and field committee for consideration, but USATF has said it hasnt received such a petition yet. Gay has until June 16 to enter a petition in order to gain entry into the meet. 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The arena was evacuated about 45 minutes before the scheduled 9:30 p.m. EST tipoff when a generator malfunction outside the arena sent smoke pouring into the building, according to NBA spokeswoman Sharon Lima.New York, NY - Toronto outfielder Jose Bautista has moved into the lead for all American League vote-getters in the latest balloting results for the 2014 All-Star Game. Bautista has received 2,135,223 votes to vault past Angels outfielder Mike Trout for the overall top spot. Trout had held the lead each of the past two weeks and is second overall with 1,945,170 votes. The third starting outfield spot is currently held by Torontos Melky Cabrera with 1,096,784 votes. Baltimores Adam Jones is more than 270,000 votes behind. Detroits Miguel Cabrera continues a healthy lead at first base with 1,477,420 votes, well in front of Chicago rookie Jose Abreus total of 845,059. Oakland third baseman Josh Donaldson has 1,470,544 votes and owns the widdest margin in the AL with a lead of more than 740,000 votes over Tampa Bays Evan Longoria.dddddddddddd New Yorks Derek Jeter still leads at shortstop with 1,376,054 votes, more than 160,000 votes in front of Chicagos Alexei Ramirez, while Seattle second baseman Robinson Cano has 1,111,880 votes and is comfortably ahead of Ian Kinsler of Detroit. Baltimore catcher Matt Wieters has 1,235,369 votes and is well ahead of New Yorks Brian McCann, while Orioles designated hitter Nelson Cruz still maintains a strong advantage over Bostons David Ortiz. The All-Star Game is scheduled for July 15 at Target Field in Minneapolis. Voting will conclude July 3. The All-Star teams will be revealed the weekend of July 5-6. 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