A tired Ronnie O'Sullivan began his bid for an eighth Dafabet Masters title with a comfortable 6-2 victory over former world champion Stuart Bingham.

Although Bingham won the opening frame, the Chigwell star took the next five in succession with the aid of breaks of 59, 96, 134, 111 and 60 at Alexandra Palace.

Bingham stopped the rot with a run of 71 in the seventh frame and looked set to take the next as well, but missed frame ball into the yellow pocket and O'Sullivan cleared up with a break of 66 to force a re-spotted black.

O'Sullivan missed two difficult chances before eventually potting the black to secure a quarter-final with Ryan Day.

"I just tried to be as professional as I can, disciplined and just draw on all your experience to do what you've got to do," O'Sullivan told the BBC. "He (Bingham) looked like he was getting stronger towards the end, I made a few mistakes and the game can punish you sometimes.

"I can play for another 10 years but I get tired now. I've got insomnia really, I've had it for seven years and every now and again it catches me out and I felt really tired today.

"I wasn't sure I was going to get through it but I went out there and the adrenaline kicked in. It's important when you're tired to feel like you are playing all right because adrenaline can overtake you."