Wexford pulled off a massive scalp seeing off five-time FAI Cup champions Sligo Rovers in extra-time to progress to the second round.
An 80th-minute goal from Dinny Corcoran forced the game to extra-time after Aidan Keena put Rovers ahead with a penalty, and Ger Shortt's cross was turned into the net in extra-time by goalkeeper Luke McNicholas to seal a spot in the next round for the First Division side.
The Bit O'Red had a short turnaround time following Thursday's European heroics, and manager John Russell made wholesale changes to his side following that win over Motherwell, and handed first starts to Eanna Clancy, Kailin Barlow and Cillian Heaney - all graduates of the Sligo Rovers academy.
Shane Blaney, Aidan Keena, Garry Buckley and David Cawley were all rested for the tie.
Wexford came to The Showgrounds hoping to cause an upset, with the in-form Aaron Dobbs named among the starters.
It was a slow start to the game, with both sides taking some time to settle into the game.
Sligo's' first real chance arrived on 14 minutes when Barlow picked out Max Mata, but Alex Moody came well off his line to gather.
Wexford defender Paul Cleary was relieved when he wasn't penalised for a couple of apparent handballs inside the home side's box, as the Bit O'Red struggled to put their stamp on the game.
Although having less of the ball than their opponents, the First Division side were looking threatening on the attack.
Conor Barry's effort from distance was never going to trouble McNicholas - who just signed a new deal with John Russell's side to remain with the club until 2024.
While Rovers were pressing, Moody wasn't troubled much in the Wexford goals, and it was McNicholas who had to be alert as he did well to smother Barry's travelling effort after good build-up play on 44 minutes.
The second-half was also lacking in action, but Sligo won a penalty on 52 minutes when Frank Liivak was upended in the box, with Keena confidently tucking it past Moody in the Wexford goal.
A great save from Moody denied Liivak from Keena's ball on 69 minutes, before Wexford were back in the game.
They were looking dangerous, particularly after changers were made. And when the Bit O'Red failed to clear their lines, Corcoran pounced to score against his former side.
Extra-time beckoned, and it was another dull affair, to tell the truth. Mark Byrne should have put his side ahead when he nodded wide from Will Fitzgerald's cross.
Sligo had their chances, but were left to rue them when Shortt's ball into the danger zone looked like it was comfortably held by McNicholas, but the Rovers netminder dropped it into his net.
In truth, it was a deserved win for Wexford who defended fantastically against the top-tier side whose attention has been elsewhere in recent weeks.
Sligo Rovers: Luke McNicholas, Lewis Banks, Nando Pijnaker, Eanna Clancy, Paddy Kirk, Adam McDonnell (David Cawley 98), Kailin Barlow (Robbie Burton, 65), Niall Morahan (Aidan Keena, 48), Frank Liiivak (Will Fitzgerald, 8), Cillian Heaney (Mark Byrne, 64), Max Mata
Wexford: Alex Moody, Paul Cleary, Joe Manley, Eoin Farrell, Adam Wells (Len O'Sullivan, 79), Luka Lovic, Conor Crowley, Conor Barry, Thomas Considine (Ger Shortt, 65), Harry Groome (Jordan Tallon, 65), Aaron Dobbs
Referee: Damien MacGraith
