Anthony McGill fights back to win as Mark Allen edges first session against Joe Perry

Anthony McGill produced a remarkable fightback to stay in the Betfred World Championship but admitted he must step up his game to worry second-round opponent Ding Junhui.

The 27-year-old Glaswegian dug in from 7-3 and 8-5 adrift to beat Ryan Day 10-8, reeling off five frames in a row as his Welsh opponent crumbled.