Wigan Athletic boss: 'We will fight until we physically can't fight any more'
Latics surrendered their nine-match unbeaten run - and clean sheet sequence stretching back to February 15 - in brutal fashion against the promotion-chasing Bees.
A Said Benrahma hat-trick was literally the difference between the two sides in a one-sided encounter.
And after an emotionally draining week, which saw Latics placed into administration and handed a 12-point deduction, which would send them to the bottom of the Championship, Cook was left to lick his wounds.
But anyone suggesting Latics will lie down and accept their fate has another thing coming.
"I can guarantee the supporters - and I will guarantee them this - we will not take this lying down and fade away," Cook said.
"We've got a massive game ahead of us on Wednesday at the DW against QPR.
"And I can guarantee the supporters - I will give them my word - we will lift these players the best way we can.
"We will fight until we physically can't fight any more, until someone tells us it's mathematically impossible to stay in the league.
"At the minute, there is a realistic chance we can stay in this league.
"We had a bad day at the office today.
"It was a flat performance, it was a disappointing performance.
"Credit to Brentford, they are a good side, a very good side.
"But it was always going to be difficult, and we will just have to pick ourselves up and do our best to make the fans proud of us."