Illness forces Berdych out of US Open

World No.8 Tomas Berdych of the Czech Republic has pulled out of the US Open after suffering an appendicitis.

"I am very disappointed to announce I will not be able to compete at the US Open this year," the 30-year-old wrote on Twitter on Saturday.

"I was just diagnosed with Appendicitis in Cincinnati so I will be flying back to Europe for additional checks and treatment.

"I will need to take some time off to recover fully but I know I will get back as strong as ever."

Berdych, who lost in this year's Wimbledon semi-finals to eventual champion Andy Murray, pulled out of the Rio Olympic Games due to fears over the Zika virus.

The US Open starts on August 29.