Ronnie O’Sullivan makes snooker history with 153 break at World Open

• O’Sullivan snookered Ryan Day at start of first frame

• Seven-time world champion won 5-0 to reach semi-finals

Ronnie O’Sullivan has made the highest break in professional snooker by hitting a 153 at the World Open in Yushan, China.

The 50-year-old achieved the feat after leaving Ryan Day in a snooker to begin the opening frame of their quarter-final and the Welshman’s failed escape attempt gave O’Sullivan a free ball.