Emmerson Boyce admits Wigan's Premier League survival hopes would have looked bleak had they not beaten Birmingham on Saturday.
The Latics produced an impressive comeback to seal a dramatic 2-1 triumph at the DW Stadium thanks to Maynor Figueroa's stoppage-time winner.
The result was not enough to lift Wigan out of the basement of the league table, with teams around them also picking up points.
But they are now just two points away from safety with eight games remaining, and full-back Boyce feels they have given themselves a much-needed shot in the arm ahead of their next outing against Tottenham.
He told the Wigan Evening Observer: "We saw the other results, and if we hadn't won it would have been a very hard task for us to get out of it.
"But the three points are in the bag now and we can look forward to the Tottenham game with a great deal of confidence."
Boyce was involved in the Latics' first goal, setting up Tom Cleverley to cancel out Liam Ridgewell's opener for the visitors.
The 31-year-old Barbados international is looking to continue making an attacking contribution as Wigan bid to avoid the drop.
"I managed to get forward quite a bit, and it's something I have been working on," said Boyce.
"Hopefully I can chip in with the creativity and we can keep getting guys on the end of crosses and score the goals we need to stay up."