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Highlights: Co-op Insurance Cup round-up
Dundee United eased into the Co-operative Insurance Cup quarter-finals with victory over hardworking Airdrie.
David Goodwillie headed in from a yard out in the 33rd minute after goalkeeper Stephen Robertson parried clear a header from Lee Wilkie.
Scott Robertson was denied by his namesake before Airdrie's Joe Cardle forced a fine stop from Lukasz Zaluska.
But it was Robertson who ensured a home win with a stunning strike from 18 yards four minutes before the break.
It meant that the First Division Diamonds could not repeat the giant-killing feat that saw them dump Hearts out of the previous round.
Goodwillie had been given his chance after fellow striker Jon Daly, who scored a hat-trick against Cowdenbeath in the last round, missed out because his wife was in hospital having their first child.
The Taysiders enjoyed the majority of possession, but it was 22 minutes before they forced a save from Robertson via Craig Conway's looping free-kick.
Airdrie forced a series of corners, but it was the home side who took the lead when Robertson parried clear a Wilkie header but was powerless to stop Goodwillie nodding the rebound into the net from close range.
Zaluska prevented the Diamonds drawing level after 37 minutes, making an acrobatic save to deny Cardle.
Craig Levein's side then went two ahead just three minutes before the break, with Robertson curling a fantastic shot around the goalkeeper from 20 yards.
Robertson nearly added his second of the night with another shot from the edge of the box, but this time the goalkeeper was able to save.
Goodwillie opened the scoring at Tannadice
Francisco Sandaza should have scored for United after 57 minutes when the ball broke to him off the shoulder of Marc Smyth, but he snatched at his shot, sending it over.
United were peppering the Diamonds' goal with shots, but Gomis, who was otherwise outstanding, missed the target from 18 yards.
Levein swapped his strikers with 22 minutes remaining, as on-loan Sunderland forward Roy O'Donovan replaced Sandaza.
The Irishman tried his luck with an overhead kick almost immediately after coming on, but the ball skidded past the post as the Dundee side eased into the last eight.
Dundee United manager Craig Levein:
"Goodie is a different animal now, he's grown up a bit and is more mature.
"He still has his moments, right enough, but he's definitely changed a lot since I came in here.
"He's also grown physically and knows a bit more about the game because of the time he spent out on loan.
"It was actually a difficult situation because all the work we did in the build-up was based on getting crosses in to Jon Daly, but when he couldn't make it, Goodie was thrown in.
"So our game-plan changed a bit, but the players adapted well and I'm proud of them.
"It's the first time we've won back-to-back games for a bit and now we want to make it three against Hearts on Saturday."
Airdrie United manager Kenny Black:
"We needed to produce the kind of performance we did against Hearts and I don't think we reached it.
"It might have been interesting if their goalkeeper hadn't made that save from Joe Cardle and we got the equaliser, but it wasn't to be.
"I thought it was in, I was just about to jump up to celebrate, but what a top-class save it was.
"But, over the 90 minutes, United were the better team, so we've got no complaints."
Dundee Utd: Zaluska, Dillon, Dods, Wilkie, Dixon, Conway (Swanson 79), Goodwillie, Scott Robertson, Gomis, David Robertson (McCord 88), Sandaza (O'Donovan 69).
Subs Not Used: Grainger, McGovern.
Goals: Goodwillie 33, Scott Robertson 42.
Airdrie Utd: Robertson, Smyth, Bobby Donnelly, Nixon, Darren Smith (Noble 61), Cardle (Mcguire 77), McLaughlin, McKenna, Brown, McDougall, Di Giacomo.
Subs Not Used: Hazley, Brady, Hollis.
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