Her next match will be against Gisela Dulko of Argentina -- the 19-year-old who beat her in straight sets in the first round of the French Open last month.
The first day also featured another Wimbledon staple -- rain. There were four rain delays in all; six matches weren't completed and 18 never started.
In between rain drops, Federer opened defense of his title with a 6-3, 6-3, 6-0 victory over British wild card Alex Bogdanovic. It was the Swiss star's 18th straight win on grass -- the longest streak since Pete Sampras won 23 in a row from Wimbledon in 1998 to Queen's in 2000.
Another former men's champion, 2002 winner Lleyton Hewitt, beat Jurgen Melzer of Austria 6-2, 6-4, 6-2. Venus Williams, champion in 2000 and 2001, swept 106th-ranked Marie-Gayanay Mikaelian of Switzerland 6-3, 6-0.
Venus' sister, two-time defending champion Serena, was paired in the first round Tuesday against Zheng Jie of China.
In men's play, second-seeded Andy Roddick was matched against Wang Yeu-tzuoo of Taiwan and No. 5 Tim Henman against Ruben Ramirez-Hidalgo of Spain.
Defending champion Roger Federer can't be accused of having an overloaded entourage at Wimbledon.
Attempting to defend a Grand Slam title for the first time, the 22-year-old Swiss star still doesn't have a coach or employ anyone to monitor his rivals.
"I don't have any spies here. I'm the only spy around," the top-ranked Federer said Monday after his 6-3, 6-3, 6-0 win over Andy Bogdanovic in the tournament opener on Centre Court.
He lists Lleyton Hewitt, Andy Roddick and Tim Henman as serious challengers.
POSITIVE SPIN
Lleyton Hewitt, the 2002 Wimbledon champion, has already gone one better at the All England Club than he did last year, and says he's thankful for small mercies.
Hewitt was upset by Ivo Karlovic last year and became only the second men's singles defending champion since 1967 to be bundled out in the first round at Wimbledon.
"The good thing was ... I only had one [entry-ranking] point to defend, so I wasn't worried about my ranking taking a dive," Hewitt said after his first-round win over Jurgen Melzer of Austria.
RECORD SETTING
Japan's Ai Sugiyama beat Amanda Janes of Britain 3-6, 6-2, 6-3 in the first round as she started her 38th consecutive Grand Slam tournament, the longest streak among active players.
Wayne Ferreira had to wait another night to set a new record for most consecutive Grand Slam tournaments contested by men. His first-round match against Ivan Llubicic of Croatia was postponed until Tuesday after four rain delays.
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