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The men's 100 metres competition at the 2012 Summer Olympics in London, United Kingdom was held at the Olympic Stadium on 4–5 August 2012.〔(Athletics at the 2012 Summer Olympics )〕 The competition comprised four rounds: a preliminary round for entrants without the minimum qualifying standard, a heats round, followed by three semi-finals of eight athletes each, which then reduced to eight athletes for the final.〔(【引用サイトリンク】url=http://www.london2012.com/athletics/event/men-100m/competition-format/index.html )〕 Leading up to this Olympics, defending champion Usain Bolt was the star of the sport first based on the world records he had set in both the 100 metres and 200 metres in the previous Olympics in Beijing, while showboating to the finish. That celebrity continued when he ran more seriously in the 2009 world championships, improving both records into Beamonesque territory. But at the subsequent world championships, Bolt false started out of the 100 metres, opening the way for his training partner Yohan Blake to win the championship. Later in the season, Blake also posted a 200 metres time that was only .07 behind Bolt's world record. And then at the 2012 Jamaican Olympic Trials, Blake beat Bolt in both events. ==Competition== The three American and three Jamaican favorites along with home team Dwain Chambers won each of the seven round one heats, most of them running as easy a round as possible. Ryan Bailey led the way with a personal best 9.88 ahead of a couple of national records. In the first semi-final, Justin Gatlin ran the fastest semi-final in history 9.82, leading former world record holder Asafa Powell down the track. As Powell eased up, Churandy Martina edged him for the second automatic qualifier at 9.91, and Powell qualified with a 9.94 time. Suwaibou Sanneh improved his national record for Gambia at 10.18, set the day before. In the second semi-final, defending champion and world record holder Usain Bolt ran a relaxed race, looking around and slowing down, finishing in 9.87. Ryan Bailey got the second spot in 9.96. In the third semi-final, Yohan Blake ran 9.85, with Tyson Gay in second at 9.90. The final qualifier was defending silver medalist Richard Thompson with 10.02. In the much-anticipated final, Bolt accelerated with 50 meters to go, passing all competitors to win the gold medal. Blake edged past Gatlin, who in turn held off a closing Gay at the finish line. Usain Bolt won the gold medal for a second successive time, becoming only the second man in history, after Carl Lewis (1984, 1988), to repeat. His winning time of 9.63 seconds broke his own Olympic record set in 2008 and was second on the fastest times behind his own world record. His Jamaican teammate, Yohan Blake, finished second in 9.75 seconds. Blake's time was the fastest ever not to win a gold medal. Former world record holder and 2004 Olympic champion Justin Gatlin finished with the bronze medal with a time of 9.79 seconds. This race set a number of records, including: the first time in history that the top 3 finished under 9.80 seconds; the first time in history that the top 5 finished in under 9.90 seconds; the first time in history that the four fastest men in 100m history all featured; and 7 of the 8 men ran in under 10 seconds, again a first in the 100 meters, with only Asafa Powell (11.99) failing this, due to an injury he sustained 60 meters into the race. Apart from Powell, each runner's time was the fastest-ever for his respective placing. Despite not getting gold, Blake, Gatlin, Gay, and Bailey all ran times that would have won at least silver in any previous Olympic final. Blake, Gatlin and Gay each ran times that would have won gold in any Olympic final before 2008 (i.e. before Bolt's 9.69 race in Beijing). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Athletics at the 2012 Summer Olympics – Men's 100 metres」の詳細全文を読む スポンサード リンク
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