Mark Allen's hopes of winning the European Masters in Bucharest were dashed after he suffered defeat to former world number one Ronnie O'Sullivan in the second round.
The Rocket took the match 4-2, despite Allen taking the first frame, and now advances to the quarter-finals at the Ulsterman's expense.
Allen had earned a match against O'Sullivan after he swept past English amateur Daniel Wormesley in the first round, whitewashing him 4-0.
However he found himself up against a superior opponent in O'Sullivan, who made life a lot trickier for the Antrim man.
Despite all that Allen took the first frame with a break of 121, however this proved not to be a sign of things to come.
O'Sullivan immediately struck back in the second frame and then took the third to swing the tie in his favour.
Allen fought back in the fourth to square it once again at two frames all, before breaks of 77 and 80 handed O'Sullivan frames five and six, and also the match, 4-2.
Elsewhere, John Higgins and Daniel Robertson both made it safely into today's quarter-final clashes.
Higgins overcame Tom Ford 4-3 in one of the day's early games before Robertson triumphed 4-1 over Rhys Clark.