As the Latics immediately returned to training following their stunning victory over Manchester City at Wembley, results in the Barclays Premier League pushed them to the brink of relegation.
Their fate is still in their own hands as victories over Arsenal and Aston Villa will complete a dramatic escape and the most remarkable week in the club's history - but the task is a formidable one.
Anything less than victory against the Champions League-chasing Gunners at the Emirates Stadium on Tuesday will effectively end their eight-year stay in the Premier League. The Latics are four points from safety with a far inferior goal difference to their closest rivals Sunderland.
The situation means Wigan's sensational Wembley success - the biggest cup final upset for a generation - could quickly become one of the least savoured.
Midfielder Shaun Maloney, who was outstanding against City, said: "We are going to have to sleep well, we have got a big game on Tuesday.
"It is an incredible achievement to win the FA Cup and we are going to be on a pretty big high but the work for Arsenal has already started."
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