Wigan bounced back from conceding 10 goals in two Premier League games to ease past League One Hartlepool and into the Carling Cup third round.
Sam Collins turned Hugo Rodallega's free-kick into his own net to put Wigan ahead after only three minutes.
Jordi Gomez doubled the lead when his stunning 25-yard free-kick crashed in off the underside of the bar.
And Victor Moses ensured the score had a flattering look when he fired in from the edge of the box.
Wigan's under-fire boss Roberto Martinez had made six changes to the side hammered 6-0 by Chelsea on Saturday and his players gave him the result he was looking for, even though the performance still left room for improvement.
Martinez has goalkeeper Ali Al Habsi, on loan from Bolton, to thank for keeping his side ahead in the first half.
Al Habsi had replaced Chris Kirkland in goal for Wigan and he pulled off a stunning fingertip save to deny Joe Gamble in the 28th minute.
Paul Murray struck a dangerous, bobbling shot which Al Habsi did well to hold first time and he saved again from Gamble from a 25-yard drive.
But Martinez made two changes in the 65th minute, introducing Victor Moses and James McCarthy for Rodallega and James McArthur respectively and that was enough to spur Wigan into life as they pressed on to put hard-working Hartlepool out of the competition.
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