Usain Bolt and fellow Jamaican Yohan Blake finished 1-2 in the 100-meter dash while Justin Gatlin of the U.S. earned the bronze medal.
2 of 18Bill Frakes/SI
Usain Bolt ran a 10.63 to win the 100 for the second consecutive Olympics.
3 of 18Mike Powell
Bolt is the first man since Carl Lewis (1984, '88) to be awarded the gold medal in the 100 in back-to-back Olympics.
4 of 18Clive Brunskill/Getty Images
Andy Murray of Great Britain celebrates winning the singles gold medal over Roger Federer.
5 of 18Mike Powell
Tiki Gelana of Ethiopia heads toward a first-place finish in the women's marathon in a time of 2 hours, 23.07 seconds, five seconds faster than Priscah Jeptoo of Kenya.
6 of 18Mike Powell
After finishing five seconds behind winner Tiki Gelana of Ethiopia in the hard-fought women's marathon, silver medalist Priscah Jeptoo of Kenya paused.
7 of 18Clive Brunskill/Getty Images
Venus and Serena Williams won Olympic doubles again, increasing the number of career gold medals each has won to four.
8 of 18Robert Beck/SI
The U.S. women wrapped up pool play with a 114-66 victory over China and will play Canada on Tuesday.
9 of 18John Biever/SI
Britain's Natasha Jonas punches her way to a 21-13 victory over Quanitta Underwood of the U.S. during a lightweight bout in the round of 16.
10 of 18John W. McDonough/SI
Nevin Zugaj of Croatia (blue) defeated Tolba Estam of Egypt during their Greco Roman match.
11 of 18John W. McDonough/SI
12 of 18John W. McDonough/SI
13 of 18David E. Klutho/SI
Suzana Lazovic of Montenegro launched a screaming shot on goal in her team's 25-25 handball tie with Russia.
14 of 18John Biever/SI
On the historic first day of Olympic women's boxing, 132-pound Queen Underwood of the U.S. marched in to face Britain's Natasha Jones. Underwood's dream of winning Olympic gold was dashed with a 21-13 loss.
15 of 18Peter Read Miller/SI
Alaaeldin Abouelkassem (left) outtouched Britain's Richard Kruse 6-5 in their men's team foil match, but the British claimed victory, 45-33.
16 of 18John W. McDonough/SI
Emin Ahmadov of Azerbaijan (red) locked up Zurabi Datunashvili during his victory over the Georgian in their quarterfinalmatch in the 163-pound class.
17 of 18Bill Frakes/SI
The U.S.'s Sanya Richards-Ross (center) raced to victory in the women's 400 meters in 49.55 seconds, holding off runnerupChristine Ohuruogu of Great Britain (second from left).
18 of 18Thomas Lovelock/SI
Home favorite Andy Murray raised the roof at Wimbledon by defeating old nemesis Roger Federer 6-2, 6-1, 6-4 in their goldmedal match.
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