PHOTO GALLERY: Day 7 at the London Games

By The Associated Press

August 3, 2012 | 6:58 p.m. CDT

The London Games continued on Friday with Michael Phelps increasing his record medal total to 20, Serena Williams advancing to the women's tennis final and 15-year-old swimmer Katie Ledecky winning gold for the U.S.

United States' Christian Cantwell competes in the men's shot-put final during the athletics competition in the Olympic Stadium at the 2012 London Olympics on Friday. | DAVID J. PHILLIP/The Associated Press

United States' Katie Ledecky after her gold medal finish in the women's 800-meter freestyle swimming final at the Aquatics Centre in Olympic Park during the 2012 Summer Olympics on Friday. | Jae C. Hong/The Associated Press

United States' gold medalist Michael Phelps, front, walks with South Africa's silver medalist Chad le Clos behind him after the medal ceremony for the men's 100-meter butterfly swimming final at the Aquatics Centre in the Olympic Park on Friday. | MATT SLOCUM/The Associated Press

Serena Williams serves to Victoria Azarenka of Belarus at the All England Lawn Tennis Club in Wimbledon, London at the 2012 Summer Olympics on Friday. | Elise Amendola/The Associated Press

A British fan cheers before the quarterfinal women's soccer match between Britain and Canada at the 2012 London Summer Olympics in Coventry, England, on Friday. | HUSSEIN MALLA/The Associated Press

United States' Alex Morgan, left, vies for the ball with New Zealand's Abby Erceg during their women's quarterfinal soccer match at St James' Park in Newcastle, England, during the 2012 Summer Olympics on Friday. | SCOTT HEPPELL/The Associated Press