LONDON -- Defending beach volleyball gold medalists Todd Rogers and Phil Dalhausser of the United States were knocked out of the Olympics on Friday by Italy.
The Americans were among the favorites to win another gold medal.
Rogers and Dalhausser lost the first set 21-17 and fell behind Paolo Nicolai and Danielle Lupo 12-7 in the second. The Americans tied it 19-19 but lost the final two points and were eliminated when Rogers' spike was blocked back into him by the 6-foot-8-inch Nicolai.
Earlier Friday, Americans Jennifer Kessy and April Ross beat Switzerland's Simone Kuhn and Nadine Zumkehr to advance to the quarterfinals of the women's tournament. Top-seeded Juliana and Larissa also advanced, eliminating the Netherlands 21-10, 21-17, and Laura Ludwig and Sara Goller beat fellow Germans Katrin Holtwick and Ilka Semmler 21-16, 21-15.
The men's and women's round of 16 continued later Friday and Saturday.
Mariusz Prudel and Grzegorz Fijalek of Poland also advanced in the first round of knockout play, beating Sascha Heyer and Seba Chevallier of Switzerland 21-18, 21-17. Martins Plavins and Janis Smedins of Latvia beat Martin Spinnangr and Tarjei Viken Skarlund of Norway, 21-18, 21-16.