Novak, Serena advance

Top seeds Novak Djokovic and Serena Williams cruised into the Wimbledon second round on Tuesday as the All England Club recovered from the shockwaves of Rafael Nadal's exit 24 hours earlier.
World number one Djokovic, the 2011 champion, beat Germany's Florian Mayer 6-3, 7-5, 6-4, in the Serb's first grass-court outing of the season and his first match since his shattering five-set semifinal loss to Nadal at the French Open.
Defending champion Williams, chasing a sixth Wimbledon title and 17th major, racked-up her 32nd successive win, cruising to a 6-1, 6-3 win over Luxembourg's Mandy Minella.
Russia's Maria Kirilenko, who made the quarter-finals last year, slumped to a first round exit at the hands of Britain's world number 38, Laura Robson, who claimed a 6-3, 6-4 win.
Kimiko Date-Krumm, just three months shy of her 43rd birthday and the oldest woman in the main draw, made the second round with a 6-0, 6-2 win over Carina Witthoeft, an 18-year-old German qualifier, who was just four when the Japanese star made her Wimbledon debut in 1989.
Li Na, the Chinese sixth seed, enjoyed a comprehensive 6-1, 6-1 defeat of Dutchwoman Michaella Krajicek.
Argentinian eighth seed Juan Martin del Potro, who missed the French Open through illness, saw off Spain's Albert Ramos 6-2, 7-5, 6-1.
Australia's Bernard Tomic put out American 21st seed Sam Querrey, 7-6 (8/6), 7-6 (7/3), 3-6, 2-6, 6-3 despite complaining of dizziness midway through the match and being forced to call for a doctor.