Serena Williams kept her perfect grass court record for the year intact in her first round match.
Venus Williams, former Olympian Dominique Dawes and First Lady Michelle Obama were in her player's box.
Serena Williams defeated Jelena Jankovic routinely, 63 61, and has now won 29 of her last 30 matches.
While the No.4 seed cruised, No.5 seed Samantha Stosur was outlasted by Carla Suarez Navarro, 36 75 108.
Kateryna Bondarenko also came close to an upset but ended up falling to No.6 seed Petra Kvitova, 64 57 64.
Indian duo Rushmi Chakravarthi and Sania Mirza fell to Taiwanese duo Chuang Chia-Jung and Hsieh Su-Wei.
Caroline Wozniacki was one of the last players to take the court on Day 1, facing one of Britain's best.
Caroline Wozniacki was in trouble early against Anne Keothavong, losing the first set in 41 minutes, 6-4.
But Caroline Wozniacki fought back, ending the match, 46 63 62, with 22 winners to 17 unforced errors.
Flavia Pennetta broke serve eight times to beat the hard-hitting Sorana Cirstea in three sets, 62 46 62.
Angelique Kerber and Sabine Lisicki were down 61 42 in their doubles match against a young British duo.
But Laura Robson and Heather Watson couldn't hold onto their lead against the Germans, falling, 16 64 63.