DULKO DEFEATS SHARAPOVA, CAÑAS OUT?

Two of the five Argentines still running in the tournament were playing the second round today. Surprise victory for Gisela Dulko, who defeated Russian fourth seed Maria Sharapova (6-2, 3-6, 6-4). On the men's board, Guillermo Cañas is playing third set against Spaniard Albert Montanes (32nd seed) after losing the two first (4-6, 3-6). Del Potro, Mayer and Vassallo-Arguello will play tomorrow, as they qualified only yesterday.

FEDERER AND DJOKOVIC HIGHLIGHTS OF THE DAY

Second seeds Roger Federer and Serena Williams highlight today'ss second-round action at Wimbledon. Fourth seeds Elena Dementieva and Novak Djokovic are in the schedule, as is American Mardy Fish.

Men's third seed Andy Murray and No. 6 Andy Roddick were among the first-round winners at Wimbledon yesterday. Murray won in four sets as he begins his bid to become the first British man to win Wimbledon since Fred Perry in 1936.

Roddick also needed four sets to pull out a victory and join fifth seed Juan Martin de Potro in the second round. And 21-year-old American qualifier Jesse Levine pulled off the day's biggest upset, knocking out 14th seed Marat Safin.

Women's top-ranked Dinara Safina opened another bid for her first Grand Slam crown with a 7-5, 6-3 victory over Lourdes Dominguez Lino of Spain. Third seed and two-time defending champ Venus Williams also won in straight sets, as did sixth-seeded Jelena Jankovic.

TODAY'S MAIN RESULTS:

Women:
Gisela Dulko (ARG) def. Maria Sharapova (RUS)
6-2, 3-6, 6-4

Men:
Novak Djokovic (SRB) (4) def. Simon Greul (GER)
7-5, 6-1, 6-4