United States' Matthew Grevers competes in a men's 100-meter backstroke swimming semifinal at the Aquatics Centre in the Olympic Park.
ASSOCIATED PRESS
From left, Australia's Christian Sprenger, South Africa's Cameron van der Burgh, and United States' Brendan Hansen pose with their medals for the men's 100-meter breaststroke swimming final.
associated press
United States' Michael Phelps competes in the men's 4x100-meter freestyle relay final.
ASSOCIATED PRESS
United States' Michael Phelps, right, watches after completing his leg of the men's 4x100-meter freestyle relay.
ASSOCIATED PRESS
United States' Ryan Lochte dives into the pool for the final leg of the men's 4X100 meter freestyle relay as teammate Michael Phelps, right, looks on.
associated press
United States' Ryan Lochte, left, competes in the men's 4x100-meter freestyle relay final.
associated press
United States' Michael Phelps reacts after his team won silver in the men's 4x100-meter freestyle relay final.
ASSOCIATED PRESS
From left, United States' Cullen Jones, United States' Ryan Lochte, United States' Nathan Adrian and United States' Michael Phelps pose with their silver medals for the men's 4x100-meter freestyle relay final.
ASSOCIATED PRESS