Qualifier Fergal O'Brien clinched a place in the second round of the World Championship with a tense 10-9 win over world number 12 Barry Hawkins.
O'Brien punched the air in the final frame
Resuming at 4-4, O'Brien opened up a 7-5 lead, with an 82 break in the 12th.
A 48 in the 15th took O'Brien to within a frame of victory at 9-6 up but with the finishing line in sight, O'Brien's potting fell apart under pressure.
Hawkins took the next three, with a 129 in the 16th, but missed a black in the 19th allowing O'Brien to seal victory.
Victorious Fergal O'Brien said the emotions felt during the deciding frame caused him to punch the air in delight.
It's horrible having come back from 9-6 down to level at 9-9 and then get beaten
"I had a Peter Ebdon moment in the last frame," said the Irishman, referring to the player's reaction at beating Stephen Lee 13-12 in 2001.
"It was such a relief to win, potting the difficult red was a great shot to do it with."
"I played well all day and in those situations you've got to fight."
Hawkins was disappointed to have suffered bad luck in the final frame, having fought back from 9-6 down.
"The bounce off the top cushion I got was ridiculous, it took me out of position and then I missed," said the Dartford player.
"I fancied clearing up when I got in the balls in that last frame, but the luck wasn't with me.
"I haven't played well all season, but it's horrible having come back from 9-6 down to level at 9-9 and then get beaten."
Barry Hawkins 9-10 Fergal O'Brien
75-47 (58) 85-1 57-58 60-56 5-63 29-69 (69) 79-46 27-90 (63) 9-120 (120) 17-97 (51) 70-1 (70) 28-80 (80) 19-68 (68) 69-64 (O'Brien 64) 42-50 129-0 (129) 86-15 (78) 83-27 (66) 27-71