LONDON --There was a familiar sister act at Wimbledon on Monday, with Serena and Venus Williams each advancing in the singles tournament, then combining for a doubles win.
Other major champions to advance in singles included Roger Federer, Lleyton Hewitt, top-seeded Victoria Azarenka, Kim Clijsters, Petra Kvitova, Ana Ivanovic and three-time Wimbledon runner-up Andy Roddick.
Venus Williams waited an extra day because of rain to begin her bid for a record fourth gold medal in Olympic tennis, then defeated recent French Open runner-up Sara Errani of Italy 6-3, 6-1. Serena completed a July sweep of Poland's Radwanska sisters by beating Urszula in the second round, 6-2, 6-3. She defeated Radwanska's sister, Agnieszka, in the Wimbledon final this month. Federer also reached the third round, beating Julien Benneteau of France 6-2, 6-2.
"What a good day for fans between me, Venus, Roger and all the other players," Serena Williams said. "It's really such a great experience."
Also Monday, Switzerland stripped a soccer player of his Olympic accreditation after he sent a threatening and racist message on Twitter about South Koreans. The comments by Michel Morganella came hours after the Swiss lost to South Korea, 2-1, on Sunday.
The 23-year-old player said in the tweet that South Koreans "can go burn" and referred to them as a "bunch of mongoloids."
Swiss Olympic team chief Gian Gilli said via a translator at a news conference that Morganella "discriminated against, insulted and violated the dignity of the South Korea football team as well as the South Korean people.
Morganella later released a contrite statement through the Swiss Olympic team: "I am sincerely sorry for the people of South Korea, for the players, but equally for the Swiss delegation and Swiss football in general. It's clear that I'm accepting the consequences."
Morganella is the second athlete kicked off an Olympic team in London for offensive Twitter comments. Last week, triple jumper Voula Papachristou was kicked off Greece's Olympic team for her comments on Twitter mocking African immigrants and expressing support for a far-right political party.
The rest of the Olympic action Monday:
* BASKETBALL: Candace Parker and the U.S. women's team are 2 for 2 in London, and this one was a laugher.
Parker had 14 points and 12 rebounds to help the United States to a 90-38 rout against Angola.
The Americans (2-0) have won their last 35 games in the Olympics and four consecutive gold medals while Angola is looking for its first victory.
France had the most surprising win of the day, edging Australia 74-70 in overtime. Emilie Gomis scored all 22 of her points after halftime.
Belinda Snell connected from just past half court at the end of regulation, giving Australia a chance. But the Aussies had to play the extra session without stars Lauren Jackson and Liz Cambage -- both had fouled out.
China, Turkey, Russia and Canada also won on the women's side.
* EQUESTRIAN: Zara Phillips, Queen Elizabeth II's granddaughter, raced through the difficult and dangerous cross-country portion of her first Olympic equestrian eventing competition, finishing clean and well under the pace time.
Princes William and Harry watched her from the main equestrian arena, joined by William's wife, Kate, and Camilla, the wife of Prince Charles. Seated alongside them were Princess Beatrice and Princess Eugenie, the daughters of Prince Andrew.
Phillips' mother, Princess Anne, watched from the grounds of the twisty, hilly 3.5-mile course dotted with 28 obstacles.
Several of the riders who fell wore protective vests that inflated much like airbags upon impact. One of them, Hawley Bennett-Awad of Canada, was in the hospital under observation for a concussion and fracture to a bone at the base of the spine. There were no other serious injuries reported among the other fallen riders or horses.
* WATER POLO: This was quite the Olympic debut for Maggie Steffens, who scored seven goals to lead the U.S. women's team to a 14-13 victory over Hungary.
Despite a team full of veterans, it was the 19-year-old Steffens who led the way with sharp shooting from outside for the Americans, who are looking to win their first gold in the event.
Russia spoiled Britain's Olympic debut in women's water polo, getting a late breakaway goal from Evgeniya Ivanova in a 7-6 victory. Spain and Australia also won their matches.
* DIVING: China is dominating the diving boards -- again.
Cao Yuan and Zhang Yanquan totaled 486.78 points in the men's 10-meter synchronized platform, giving the country its second gold medal in the sport at the games.
German Sanchez and Ivan Garcia of Mexico had the highest degree of difficulty in the competition and it paid off with the silver.
Nick McCrory and David Boudia of the U.S. took the bronze with 463.47. The Americans are 2 for 2 after Abby Johnston and Kelci Bryant earned a silver in 3-meter synchro springboard Sunday, ending a 12-year medal drought.
* FENCING: Fencer Yana Shemyakina of Ukraine beat defending champion Britta Heidemann of Germany 9-8 to win the Olympic gold medal in women's individual epee.
The event was overshadowed by an hour-long delay following an appeal by the South Korean team after Heidemann's 6-5 victory over Shin A-lam in the semifinals.
South Korean officials argued the match was already over when Heidemann scored the winning point in the last second, but the jury finally upheld its decision.
* BOXING: Light heavyweight Damien Hooper rallied from a third-round deficit for a 13-11 victory over Marcus Browne, handing the U.S. team its first loss in London after a 4-0 start.
Hooper and Browne put on perhaps the best three minutes of the day after both fighters cautiously fought the first two rounds. The Australian raised his aggression in the third to overwhelm Browne, a Staten Island, N.Y., product.
In the afternoon session, Jordan's first Olympic boxer, Ihab Almatbouli, won his opening bout, while Afghanistan's first Olympic boxer, flyweight Ajmal Faisal, was eliminated in the evening. Cuban teenager Robeisy Ramirez and Iranian light heavyweight Ehsan Rouzbahani also advanced.
Light heavyweight Oleksandr Gvozdyk earned the powerful Ukrainian team's first victory in London, forcing a standing-eight count for Belarus' Mikhail Dauhaliavets midway through an 18-10 decision.
* VOLLEYBALL: The U.S. women's team beat Brazil in an early rematch of the Beijing Games final.
Destinee Hooker had 23 points and Jordan Larson added 18 for the top-ranked Americans, who won 25-18, 25-17, 22-25, 25-21 to improve to 2-0 in pool play at Earls Court.
Sheilla Castro had 15 points for No. 2 Brazil, which was energized after a third-set victory but lost on Logan Tom's floater in the fourth set.
The American women have never won an Olympic gold medal in volleyball.
China, South Korea, Russia and Italy also posted four-set victories, and Britain edged Algeria in five.
* BEACH VOLLEYBALL: Two-time gold medalists Misty May-Treanor and Kerri Walsh Jennings earned their 16th consecutive Olympic victory, beating the Czech Republic in straight sets.
Jake Gibb and Sean Rosenthal lost to Poland in pool play, the first setback for the American men or women in beach volleyball at the games.
* BADMINTON: Top-seeded Lee Chong Wei returned from an injury break to squeak into the last 16 of the Olympic tourney.
The Malaysian, who tore right ankle ligaments at the Thomas Cup in late May, beat Ville Lang of Finland 21-8, 14-21, 21-11.
* CANOE: Three-time Olympic champions Pavol and Peter Hochschorner finished second in the qualifying heats in the men's canoe-kayak C2 doubles competition.
The Slovakian twin brothers, seeking a fourth consecutive Olympic gold, qualified behind the French pair of Gauthier Klauss and Matthieu Peche.