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Eric Gay, Associated Press
Croatia's Sandra Mandir, right, is pressured by Czech Republic's Katerina Elhotova, left, and Jana Vesela, center, during a preliminary women's basketball game at the 2012 Summer Olympics, Wednesday, Aug. 1, 2012, in London.

LONDON — The U.S. women's basketball team has been unstoppable at the London Games — and its starters have hardly broken a sweat.

The Americans' Olympic rookies have led the way.

The U.S. has rolled through its first three opponents, winning by 36 points a game with major contributions from its bench.

They play the Czech Republic on Friday. The U.S. beat the Czechs in the 2010 world championship title game.

The second unit, led by Angel McCoughtry, Lindsay Whalen and Maya Moore, has been spectacular. The trio sparked the Americans and helped the U.S. wear down Turkey in Wednesday's 31-point win.

Besides her play, Whalen can offer insight to her coaching staff after spending the past few years playing in the Czech Republic during the WNBA offseason.