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.

That allowed the seven-times world champion to start with a green followed by an opening black, scoring eight points before beginning on the reds.