And Ebdon capitalises to take the frame. Poor stuff from both players there, barring O'Brien's stunning 129 in the fourth. That wraps it up from us on day four of the World Open.
Ebdon P.-O'Brien F.
World Open - 22 September 2010
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Shocking, shocking shot from O'Brien there. A simple red to the bottom-right pocket which he misses to gift Ebdon the game - if he can take it, that is.
And that's why. A break of 37 comes to an abrupt end with a poor miss on a routine red. Had to be expected, though.
Under normal circumstances, you would say Ebdon could go onto win from here as the reds are spread and the black is in play. But some of shots the Londoner has made today make it difficult to predict what will happen.
And so he does, an expert break of 129, clearing the table. Can he be the first ever player to win from being two frames down in this tournament?
Frame ball has been and gone, it's now all about whether the Irishman can make a century.
This is impressive from O'Brien. He really should be on a plane back to Dublin, but thanks to Ebdon's woeful error, he's still there and he's making the most of it. His break currently stands at 60.
Peter Ebdon - what are you doing? All he needs to do is keep the pink safe ane he ends up potting the white. O'Brien replaces the cue ball, puts in the pink and then the black. 2-1, thank you very much.
After a long safety exchange with the final two reds, Ebdon has finally knocked one of them in and now he really should seal the match.
But he's blown the chance - and what a chance it was too - with a miss on a routine red to the bottom-right pocket. Pressure getting to Peter?
Good chance here for Ebdon to take the match. Enough reds are available to gain a strong lead over O'Brien, he leads 23-7 as it is.
Minor blip from Ebdon as he pots the white to give O'Brien a hope, but the Irishman can't find a decent snooker and the Englishman fires in a terrific brown to double his lead.
But he's back at the table after a mistake from O'Brien and he cuts a tricky-looking red to the right-centre pocket. Surely the Ebdonator will make it 2-0 now.
Another bad contact there for Ebdon - he's had a few already - which sees the white unfortunately roll into the left-centre pocket to end a decent break of 42.
It's another tight frame with points being shared out accordingly. Ebdon is at the table 51-31 up, with four reds left. Difficult shot here though, with a long red up to the top-right pocket.
Ebdon pots a great pink and then the black to take the frame, getting away with his miss earlier on the brown. O'Brien will be kicking himself for his miss on the pink that ulimately cost him the frame.
What a tight first frame this has turned out to be. O'Brien is onto the colours, seven points behind Ebdon. If he can pot this brown and get a decent position, the frame should be his.
Cagey start to this one. Both players are thinking through their shots at length - could be a long match.
Up next it's Steve Davis' conqueror Peter Ebdon taking on Irishman Fergal O'Brien.