Ronnie O’Sullivan withdraws and Mark Williams stunned at British Open

Ronnie O’Sullivan is not playing in Cheltenham this week (Picture: Getty Images)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.However, the Rocket’s withdrawal was confirmed in a statement from World Snooker Tour, although no reason for the