Ronnie O'Sullivan into World Snooker Championship quarters
Defending champion Ronnie O'Sullivan cruised past Ali Carter 13-8 to reach the quarter-finals of the World Championship in Sheffield.
O'Sullivan looked composed in the first session, taking a 5-3 lead, but Carter held himself together in the next to stay in touch at 7-9.
The result sets up an all-Essex last-eight clash against Stuart Bingham.
O'Sullivan, seeking to win his fifth Crucible title, only returned to snooker at the start of the tournament after a self-imposed 11-month sabbatical from the sport.
Ricky Walden survived a late fightback from Robert Milkins to reach the quarter-finals of the World Snooker Championship for the first time.
Walden, 30, had led 5-3 after the first session, a lead he extended to 10-6 in the next with breaks of 63 and 76.
His fellow Englishman Milkins, 37, hit back in the final session at the Crucible, claiming five frames, but Walden held on to win 13-11.
He goes on to face Welshman Michael White in the last eight.
China's number one Ding Junhui beat Mark King 13-9 to reach the last eight at the World Championship in Sheffield.
King looked confident in the first session at the Crucible, opening up a 6-2 lead, but Ding responded superbly to take eight of the next nine frames.
England's King battled back to 9-10 before Ding stepped up a gear to win the three frames he needed for victory.
In Monday's other match, world number eight Stuart Bingham beat Mark Davis 13-10 to reach the quarters.
Ding Junhui (Chn) 13-9 Mark King (Eng)
57-66 (53), 51-63 (59), 24-76 (52), 107-4 (107), 114-1 (114), 11-79 (57), 5-66, 2-62 (53), 81-19 (59), 98-0 (98), 74-4 (74), 76-24, 73-15, 0-90 (63), 90-41 (81), 103-0 (103), 122-0 (69), 10-84, 21-64, 137-0 (104), 116-7 (98), 71-39 (52)
Mark Davis (Eng) 10-13 Stuart Bingham (Eng)
36-78, 79-40, 17-73 (67), 69-17 (57), 4-115 (106), 63-55, 1-96 (82), 84-3 (84), 0-68 (54), 62-31, 19-92, 38-70, 22-71, 75-0 (75), 59-37, 6-87, 0-77 (77), 58-71 (Davis 58, Bingham 70), 71-44, 69-17, 0-111 (111), 14-95 (57), 11-103
Ricky Walden (Eng) 13-11 Robert Milkins (Eng)
72-59 (60), 65-1, 86-32 (76), 4-106 (106), 71-35, 51-67, 67-16, 2-117 (104), 54-13, 75-14, 72-13 (63), 76-25 (76), 23-59, 60-65 (Walden 50), 4-102 (77), 66-29 (51), 1-79 (71), 1-76 (76), 95-30 (61) 56-64 (Walden 55), 2-52, 88-5 (79), 17-57, 87-7 (86)
Ronnie O'Sullivan (Eng) 13-8 Ali Carter (Eng)
66-18, 83-8 (78), 76-15 (66), 21-92 (53), 56-16, 125-0 (125), 0-82 (82), 26 -84 (51), 86-0 (86), 0-121 (73), 12-87 (87), 105-13 (105), 61-64 (O'Sullivan 61, Carter 63), 18-63, 73-11 (73), 86-0 (86), 62-44, 4-86 (86), 88-1 (88), 112-0 (106), 90-27 (89)