Reigning world champion Ronnie O’Sullivan reeled off the final four frames to defeat gallant Ali Carter 13-7 at the World Snooker Championships in Sheffield.

　　O’Sullivan finished off the match in style securing a break of 125 in the final frame after breaks of 54 and 67 had put him in control at 12-7.

　　He had looked in trouble on Friday as his dogged opponent pegged him back to 6-6 at one point, but the champion found his range in the final Friday session at the Crucible to take a 9-7 lead into Saturday.

　　Carter never got a look in after that as O’Sullivan rounded off the match with his first break over 100 of the match.