and kickstarted the 2025 after pulled out of the Triple Crown event on medical grounds.
O'Sullivan was scheduled to take on old foe Higgins, but pulled out this week and won't get the chance to defend his title, with Robertson called up as his replacement.
And if the competition needed a shot in the arm after O'Sullivan's withdrawal, it certainly got one via the opening match. Robertson came from 5-1 down to defeat Higgins 6-5 in an almighty comeback.
He set up a quarter-final with after the Magician defeated Gary Wilson 6-3 in the evening session.
Attention now turns to Monday's action, as takes on Ding Junhui and battles for a place in the final eight.
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