Ronnie O’Sullivan was a late withdrawal from the British Open while defending champion Mark Williams was stunned in his opening round match in Cheltenham. O’Sullivan was due to face Thailand’s Manasawin Phetmalaikul in his first game and was still in the draw on Monday morning.

RONNIE O’SULLIVAN has withdrawn from the British Open just hours before he was set to get underway. The Rocket, 48, had been due to face Manasawin Phetmalaikul in round one.

Ronnie O'Sullivan was due to face Thailand's Manasawin Phetmalaikul in the first round of the British Open on Monday, but the 48-year-old withdrew at late notice

Ronnie O'Sullivan has pulled out of the British Open on the day of his slated first-round clash with Manasawin Phetmalaikul. Fans flocking to Cheltenham will be left disappointed by the Rocket's absence in an otherwise star-studded field.