The Northern Irishman won the last four frames to beat the world champion in Milton Keynes.
The “Jester” is through to the last four of the event for the first time since 2013.
The world number one advanced to the semi-finals of the invitational tournament for the second season in succession.
The Australian has already triumphed in this competition twice in the past, including twelve months ago.
The prestigious invitational is on the calendar for the eighth time since 2013.
The prestigious invitational will be staged for the eighth time since 2013 next month.
It’s the third edition of the Championship League this year, and the third different format to be utilised.
Following the conclusion of the professional World Championship, it’s the old-timers turn to shine in Sheffield.