Kim Clijsters cruised into the second round of the women's singles shortly after boyfriend Lleyton Hewitt surrendered his men's crown.
While top seed Hewitt suffered a shock defeat by Croatian qualifier Ivo Karlovic, Clijsters beat Rossana Neffa-De Los Rios 6-0 6-0.
The Belgian second seed was in uncompromising mood as she crushed her Paraguayan opponent in 32 minutes.
Venus Williams powered past qualifer Stanislava Hrozenska, winning 6-2 6-2 in 50 minutes.
The fourth-seeded American, twice a Wimbledon winner, set the tone by hitting three aces for her first three points of the match.
But Williams also peppered her game with groundstroke errors and double faults as she attempted to blast her 21-year-old Slovakian opponent off the court.
Former champion Lindsay Davenport shrugged off her recent injury woes to battle past Australian wild card Samantha Stosur 7-6 (7/3) 7-5.
The fifth-seeded American was given the run-around in the opening set as Stosur opened up a 3-1 lead on Court One.
But Davenport fought her way back by firing blistering groundstrokes past the unheralded Stosur.
She claimed the first set on a tiebreak and again had to
come from a break down in the second to clinch the match with a
crunching forehand winner.
Davenport will face Rita Grande of Italy, a 6-1 6-4 winner over Austria's Patricia Wartusch, in the second round.
Seventh seed Chanda Rubin of America won 6-3 6-0 against Croatia's Iva Majoli.
Ninth seed Daniela Hantuchova of Slovakia) beat Marion Bartoli of France 6-4 6-1, while 12th seed Magdalena Maleeva of Bulgaria powered past Anca Barna of Germany 6-0
Switzerland's Patty Schnyder made an early exit from the tournament, losing 7-6 (7/2) 6-3 to Petra Mandula of Hungary.
Israel's Anna Pistolesi, seeded 25th, also fell at the first hurdle, beaten 6-4 6-4 to Samantha Reeves of the USA.