Coverage of Friday’s Events

The battle of distance powerhouses Ethiopia and Kenya was won by the Ethiopians in the first medal event of the track and field competitions, as Tirunesh Dibaba pulled away from her Kenyan competitors to claim gold with a time of 30:20.75.

Tennis’s men’s semifinals got started with an epic match between Roger Federer and Juan Martin del Potro, which Federer won, 19-17, and were capped by a victory by Andy Murray in the other semifinal, 7-5, 7-5, over Novak Djokovic. Murray will again carry Britain’s hopes on Centre Court at the All-England Club in the final on Sunday.

Serena Williams made quick work of Victoria Azarenka of Belarus, winning their semifinal, 6-1, 6-2. Maria Sharapova beat Maria Kirilenko in a semifinal battle of Russian women, setting up a final between Williams and Sharapova.

Michael Phelps is capping his remarkable Olympic career in incredible style and leading a huge American effort. Phelps won his 21st career Olympic medal and 17th gold in the 100-meter butterfly on Friday, coming from far behind in the final 50 meters to win. He came from seventh place at the turn to beat Chad Le Clos of South Africa and Evgeny Korotyshkin of Russia, who tied for silver.

Swimming got started with a bang Friday afternoon when 17-year-old Missy Franklin reeled in another gold medal for the United States team, winning the 200-meter backstroke in world record time. An even younger American swimmer, 15-year-old Katie Ledecky, grabbed a gold medal in the 800-meter freestyle.

The U.S. women’s soccer team beat New Zealand, 2-0, in the quarterfinals.

London Live will be covering all of these events (and more) throughout the day