World Snooker Championship: McGill in control against Selby
Defending champion Mark Selby is in danger of being knocked out of the World Championship in the second round.
England's world number one trails qualifier Anthony McGill 10-6 going into Friday evening's final session of their best-of-25 match at the Crucible.
Scotland's McGill won three of Friday's first four frames to lead 7-4 but Selby got back to within one frame before McGill took the final three frames.
Elsewhere, John Higgins trails Ding Junhui 9-7 after the second session.
McGill has shown little sign of nerves on his Crucible debut, with the world number 32 confidently beating Stephen Maguire in the first round and continuing to impress against Selby.
Even when Selby looked to be mounting a comeback by taking frame 13 to cut the deficit to one, McGill kept his cool with breaks of 83, 125 and 54 putting him in control and leaving Selby in danger of falling victim to the 'Crucible curse'.
No first-time champion has ever successfully defended the world title.
"He is in big trouble," said 1991 world champion John Parrott. "It will be dismissive to call it the curse of the Crucible because McGill has played fantastic."
McGill needs three more frames to secure his place in the quarter-finals when play resumes at 19:00 BST on Friday.
In other second-round action, China's Ding turned around his match with four-time champion Higgins after an impressive second-session display.
Ding had started Friday two frames behind Higgins, who led after the first session 5-3 having at one point been 5-1 ahead.
However, the former world number one has gone from strength-to-strength as the tournament has progressed and won six frames to Higgins' two on Friday.
He took the lead for the first time in the penultimate frame of the day after a break of 92, before taking the 16th to leave him needing just four frames for victory. The match resumes at 10:00 BST on Saturday.
"All of a sudden, Ding looks like he is getting stronger in the matches," said six-time world champion Steve Davis.
"Perhaps he has truly come of age as a champion. There is a long way to go, but he must be delighted."
In other matches, England's Stuart Bingham leads Scotland's Graeme Dott 6-2 after the first session of their second-round match, while Northern Ireland's Mark Allen is 5-3 up on Barry Hawkins after their first session.