RIO DE JANEIRO -- Kerri Walsh Jennings and April Ross are in the Olympic beach volleyball semifinals.
They'll play defending world champions Agatha and Barbara on the Brazilians' home sand to clinch a medal.
The Americans beat Australia 21-14, 21-16 on Sunday night to advance.
Walsh Jennings is going for her fourth straight Olympic gold medal, and Ross won silver in London in 2012.
Walsh turned 38 at midnight, and the U.S. fans serenaded her with "Happy Birthday" during the match.