Jankovic slams match scheduling

Jelena Jankovic crashed out of Wimbledon on Monday with a parting shot at tournament organisers.

Hampered by a knee injury sustained in Saturday's third round win against Caroline Wozniacki, the number two seed from Serbia slumped to a 6-3 6-2 defeat to Thailand's Tamarine Tanasugarn on the first match on Court 18.

"I was really not happy with the scheduling," Jankovic said. "I asked to play a little bit later on in the day, which would give me a few more hours to recover and do another therapy (session) in the morning."

Jankovic was also frustrated at being forced to play away from the two main courts, arguing her seeding demanded centre-stage.

"I'm asking why is the number two seed playing on Court 18?" she said, pointing out defending champion Venus Williams had been similarly snubbed on Monday."

Fourth seed Svetlana Kuznetsova went the way of numbers one, two and three as she slipped to a 6-4 1-6 7-5 defeat at the hands of Agnieszka Radwanska.

Never since seedings began in 1927 have none of the top three made it into the quarter-finals of Wimbledon, but the top four will not be represented in the last eight in 2008 after the Russian was outmanoeuvred by her teenage opponent.

Kuznetsova seemed to be in control after strolling through the second set to level at 1-1 - especially after breaking in the third - but the wily 19-year-old from Poland battled back and took the third to set up a quarter-final clash with Serena Williams.

Number five seed Elena Dementieva won her fourth round match against Shahar Peer of Israel, 6-2 6-1. The Russian inherits the taunted label of top seed left in the tournament and will meet fellow Russian Nadia Petrova in the quarter-final.

Czech Republic's Nicole Vaidisova beat Anna Chakvetadze 4-6 7-6 (7-0) 6-3 to set up a tie with China's Jie Zheng, who beat Agnes Szavay 6-3 6-4.