Niall Quinn says the FA Cup Final is not Wigan's most important trip to London in the next seven days.
The Sky Sports pundit says next Tuesday's Premier League clash at Arsenal is more important than their Wembley showdown with Manchester City following the 3-2 defeat at home to Swansea that left Roberto Martinez's side three points adrift of safety with two games to play.
Wigan led 2-1 early in the second half, but were left to rue James McArthur's failure to convert a glorious 55th-minute chance before goals from Itay Schechter and Dwight Tiendalli ended their hopes of moving out of the drop zone.
Wigan host Aston Villa on the final day after Tuesday's trip to the Emirates and Quinn says they must prioritise top-flight survival over Wembley glory.
"It's really tough now for them," he said.
"They've got to build themselves up for a Cup Final at the weekend and it's probably a distraction to them now. They've got a more important game, I believe, in London a few days later against Arsenal.
"Then, of course, in their eyes, they'll see themselves still being in with a chance by the time Aston Villa come here, but they shouldn't have let this game escape from them with the way things were going in the first 15-20 minutes of the second half.
"Fair play to Swansea, they came out and were brilliant in the opening five minutes after half-time but Wigan turned it around and got themselves back in front and you thought they were going to go on and make life really difficult for the other clubs down there. Things went wrong.
"When McArthur missed you could feel the groan that went around the stadium at the time and people knew that would have sealed it and it gave Swansea a little chance to pick themselves up.
"What could you blame them for? Swansea scored a third goal that they had no right to score. Martin Tyler said they were in trouble, but it wasn't a great ball to the back post and there were two of them there to clear the ball. They weren't natural defenders and they suddenly find themselves 3-2 down.
"It's terrible stuff for Wigan."
The result eased the pressure on the three sides immediately above them and Quinn says the other relegation candidates must put points on the board ahead of the final round of fixtures.
Sunderland travel to Tottenham on the final day, while Norwich head to Man City and Newcastle host Arsenal and the Sky Sports pundit says none of them will want to go into those matches needing a result to survive.
"If you look at all of their games, I think the easiest one for all is the first one of the two," Quinn explained.
"There's Southampton at home for Sunderland; West Brom at home for Norwich; and QPR away for Newcastle.
"A point there, with Wigan having to go to Arsenal three days after the Cup Final, looks like it will be enough."
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