Northern Ireland's Mark Allen has progressed to the last 32 of the UK Championship after beating England's Olives Lines 6-4 on Saturday.
Number six seed Allen acknowledged that he had been given a "very tough match" by Lines.
"Great player and an even better guy. Not much in it at all but just happy to be on the right side of it," he said.
Lines' defeat ends the prospect of him facing his father Peter in the third round in York.
Peter Lines will face Allen in the last 32 if he beats China's Xu Si.
Allen beat Germany's Lukas Kleckers 6-2 in his first-round game on Wednesday evening.
The Northern Irishman's best performance at the UK Championship was reaching the 2010 semi-finals and he achieved his first ever 147 break at last year's event.
"I missed a few shots early on and I didn't quite settle playing Oliver, who is a good friend of mine," said Allen after Saturday's win.
"We had a bit of a laugh and a joke early doors but after I went a frame down I almost had to ignore him. I had to block out who I was playing as it was maybe a bit too friendly at times.
"I'm pretty happy with how I played near the end - I made a good clearance to go 5-4 up - but Oliver played really well and I couldn't have had any complaints if he had been 5-4 up. I'm very happy to get through that one."