The spotlight turned to the track and field events at the 2012 Summer Olympics in London on Sunday. Here’s a recap of the day’s action:

Jamaican sprinter Usain Bolt won his second consecutive gold medal in the men’s 100 meters on Sunday night, running the race in an Olympic record 9.63 seconds — the second-fastest 100 meters in history. Bolt’s Jamaican teammate, and world champion, Yohan Blake won the silver medal, while American Justin Gatlin took the bronze.

US track star Sanya Richards-Ross ran to victory in the women’s 400-meters, with Britain’s Christine Ohuruogu second and American DeeDee Trotter third. It was the first US gold medal in the track and field events of the London Olympics.

Elsewhere on the track, Tiki Gelana of Ethiopia won the women’s marathon in an Olympic record time of 2 hours, 23 minutes and 7 seconds, and South African runner Oscar Pistorius, the first amputee to compete in an Olympic track event, failed to qualify for the men’s 400 meter final.

On the tennis court, Britain’s Andy Murray beat Roger Federer of Switzerland 6-2, 6-1, 6-4 to win the Olympic gold medal and avenge his defeat at Wimbledon just under a month ago, while Argentina’s Juan Martin del Potro beat Novak Djokovic of Serbia to win the bronze.

Americans Venus and Serena Williams defeated Andrea Hlavackova and Lucie Hradecka of the Czech Republic in the women’s doubles tennis gold medal match to defend their Olympic doubles title won in Beijing in 2008. Belarussian duo Victoria Azarenka and Max Mirnyi beat Andy Murray and Laura Robson of Britain for the mixed doubles’ gold medal.

Other US medal winners were gymnast McKayla Maroney, who earned silver in the women’s vault, and Lisa Raymond and Mike Bryan, who defeated Germany’s Sabine Lisicki and Christopher Kas to win the bronze medal in mixed doubles tennis.

In other results, the US women’s basketball team beat China, 114-66, while Queen Underwood became the first US woman to compete in an Olympic boxing match. Underwood lost her preliminary bout to Natasha Jonas of Britain, 21-13.

Overall Medal Leader Board

China — 61 medals

30 Gold, 17 Silver, 14 Bronze

United States — 60 medals

28 Gold, 14 Silver, 18 Bronze

Great Britain — 37 medals

16 Gold, 11 Silver, 10 Bronze

Russia — 35 medals

4 Gold, 16 Silver, 15 Bronze

Japan — 27 medals

2 Gold, 12 Silver, 13 Bronze

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