Reigning champion Mark Selby looks to continue his impressive record against Anthony McGill when they lock horns at the Scottish Open on Thursday.
It is transition day at Venue Cymru in Llandudno, where just eight players will remain following the conclusion of the third and fourth rounds.
Two-time champion Selby resumes his quest to complete a hat-trick of titles in this Home Nations event.
The Jester, who lifted the trophy in 2019 and 2020, has now all 17 matches he has played in the tournament following victory over Xiao Guodong on Thursday.
Selby has also prevailed in eight of his 10 previous meetings with McGill, although the two-time ranking event winner will provide his toughest test of the week so far.
Elsewhere, Judd Trump faces David Lilley for the third time in as many events.
The Ace was a commanding winner when the pair locked horns at the Champion of Champions and UK Championship, and is yet to drop a frame in Llandudno.
After prevailing in a decider against good friend Liang Wenbo, Ronnie O’Sullivan goes head to head with Jamie Jones for the first time, while it will be the 27th meeting in all competitions between John Higgins and Ryan Day.
World number 12 Stephen Maguire takes on Ben Woollaston as Championship League winner David Gilbert looks to avert a scalp against Hammad Miah, who defeated Masters champion Yan Bingtao in the previous round.
Former British Open winner Fergal O’Brien has already claimed the scalps of Kyren Wilson and Gary Wilson this week. Now, the Irishman seeks to continue his impressive run against UK Championship finalist Luca Brecel.
Play gets underway at 1pm GMT on Thursday with all matches contested over the best of seven frames at Venue Cymru in Llandudno.
Scottish Open Snooker 2021 Day Four Schedule
Thursday December 9
Jackson Page v Matthew Selt
Scott Donaldson v Ben Hancorn
David Gilbert v Hammad Miah
Judd Trump v David Lilley
Xu Si v Martin O’Donnell
Hossein Vafaei v Li Hang
John Higgins v Ryan Day
Martin Gould v Zhang Anda
Mark Selby v Anthony McGill
Stephen Maguire v Ben Woollaston
Luca Brecel v Fergal O’Brien
Ronnie O’Sullivan v Jamie Jones