ED Upson admits the stakes couldn't be higher for Millwall as they prepare to take on relegation rivals Wigan tonight.
The two sides are third-from-bottom and second-from-bottom respectively, with the Latics currently a place higher in the table due to their superior goal difference.
But the Lions have a game in hand and victory this evening would give them a fighting chance of catching Rotherham, who are outside of the bottom three in 21st position.
The Millers are facing a points deduction for fielding an ineligible player, meaning their seven-point lead over Millwall could soon be cut to four.
So victory over Wigan could have a huge bearing on the Lions' fate and Upson, a regular in the side since Neil Harris took charge, is ready for the challenge.
"This game is as important as a game of football can be," Upson said.
"We've got to win and we'll go to win. With the spirit we've got and the fans behind us, we've got a good chance.
"You have to have mental strength as a footballer and we've all played in big games so I don't think it's that difficult to prepare yourself .
"We know how important it is so you just got out there to do your job to the best of your ability, and try your hardest. That's all you can do."
Upson, who has played in four of Millwall's five fixtures under Harris, is glad to be back in fold after being overlooked for a starting berth by Ian Holloway.
"I felt like when I played before, and then came out of the team, that I hadn't done badly or warranted coming out of the team," Upson added.
"That's just the way it was at the time – a bit stop and start for me – but I really like it here and I'm enjoying my football now.
"I'm relishing the opportunity to play regularly."