Then Shaun Murphy headed over the top after a free-kick given when Peter Hawkins fouled Asaba.
Neil Robertson, Stephen Lee and Shaun Murphy also went through, as did Ireland's Ken Doherty.
World Championship runner-up Shaun Murphy had few problems as he cruised past Michael Holt in a 5-1 win.
Marcu Fu and 2005 world champion Shaun Murphy are also already assured of their place in the last 16.
Shaun Murphy, the 2005 world champion, also progressed to the last eight with a 5-3 win over Welshman Ryan Day.
Just three minutes later the visitors' central defender Shaun Murphy headed the third from Michael Brown's cross to kill off the game.
Earlier England's Paul Hunter eased through to the last 16 of the British Open with a 5-2 victory over countryman Shaun Murphy.
Earlier Jimmy White reached the third round after beating Shaun Murphy 5-3.
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Former world champion Shaun Murphy bounced back from his opening match defeat to Day, compiling a high break of 84 in an impressive 3-0 win.
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For example, she shared the story of Staff Sergeant Shaun Murphy, an Army veteran who taught sixth grade special education in Delaware for Teach for America.
Although Poom tipped his shot wide, from the resultant corner Blades defender Shaun Murphy prodded home at the second attempt to give the away side a deserved lead.
Shaun Woodward and Paul Murphy both told him to reconsider breaking the previous government's promises under the Weston Park agreement.
Among those who have entered their names into the ballot are former cabinet ministers: Hilary Benn, Ben Bradshaw, Liam Byrne, John Denham, Peter Hain, Stephen Timms, Shaun Woodward and Jim Murphy.
Ross Forbes scored a penalty, Murphy fired in the fifth and Shaun Hutchinson headed in, all before the break, before Forbes fired his second from distance.
He denied Shaun Murray with a super diving save and kept out Murphy's cross-shot with 11 minutes left.
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