Ronnie O'Sullivan praises nutritionist after impressive World Grand Prix victory

Ronnie O'Sullivan made four centuries as he thrashed Xiao Guodong 5-0 to reach the semi-finals of the Ladbrokes World Grand Prix at Preston's Guild Hall.

O'Sullivan opened with runs of 105, 102 and 101 to race into a 4-0 lead at the interval before claiming the final frame with another ton immediately after the resumption.