Porto applied brief pressure after the interval, with Manuel Almunia saving from Falcao, but Arsenal completed the formalities and cruised into the quarter-finals with two superb goals inside three minutes just after the hour.
It was Camara who put Wigan back in the ascendancy with two quick goals as the game burst into life.
The ballboy, who is the son of club director Martin Morgan, fell on the ball after it went out of play late in the game as Chelsea chased the two goals they needed to send the tie into extra time.
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New York's Josh Bailey had scored the go-ahead goal 14 seconds into the second period, and Lubomir Visnovsky extended the Islanders' lead to two goals.
And, eight minutes into the second half, Irish striker Anthony Stokes scored the first of his two goals on the night by curling a free-kick past the despairing Hearts goalkeeper.
With his three goals against Tranmere two weeks ago, he has now scored six goals in two games, to help Bournemouth into the second round of the FA Cup and third in League One.
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The Eagles were two goals down inside the first four minutes and after getting back into it, were 3-1 down early in the second half, but battled back to extend their unbeaten run to seven games.
And yet he's just two goals away from breaking into the club's top-10 all-time scorers.
Then came his two goals against the Netherlands in the final group stage match that sent Portugal into the quarterfinal.
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Goals from Fredy Guarin and Rodrigo Palacio put Inter in a commanding position but two goals in four minutes from Alessandro Diamanti and Manolo Gabbiadini pushed the match into extra time.
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Martin spent last season on loan at Luton Town in League Two, but the 20-year-old, who burst into the Canaries team with five goals in nine games in 2007, has learnt from the experience according to Gunn.
Indeed, Milan has had a whole range of players stepping up in turn, like centerforward Giampaolo Pazzini, who earlier this season went 11 games without scoring, but on Saturday notched two of the three goals that sank Lazio, allowing Milan to leapfrog its opponent into third place.
Two late goals helped the Blue Sharks overcome a one-goal deficit, sending them into the last eight.
But two goals in stoppage time finally sank their hopes and sent the capacity crowd in Casablanca into ecstasy.
Malian striker Dramane Traore, joint leading Champions League scorer with six goals, was involved in many attacks and went close on two occasions, firing into the side netting when clear and going even closer with a header.
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Not in the previous two games when Boston scored just two goals as Toronto turned a 3-1 series deficit into a 3-3 tie.
Paterson stretched the visitors away again after the restart with two quick goals, the second created by the full-back's break that drew Byrne into conceding a penalty and earned him a yellow card in the process.
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