Boss Slaven Bilic said his West Brom team must show whether they are “real men or close men” after Friday’s loss to Huddersfield jeopardized his bid to promote the championship.
With Leeds favored by the loss, Albion will see Brentford move to second if he beat Stoke on Saturday.
The Baggies must now win at home against QPR on Wednesday and hope that the Bees – a point behind them in third – will slip.
“We have two options, be sorry or take our second chance,” Bilic said.
He told BBC Radio WM: “Now it’s up to us to show whether we are real men or close men.
“We have to do it, it is not because we are not professionals. We have to react appropriately and see what it brings. ”
Bilic’s side scored a goal in less than four minutes at Huddersfield thanks to a strike from Chris Willock and despite being tied before half-time thanks to Dara O’Shea, they struggled to create opportunities after the pause.
Emile Smith Rowe then brought the Terriers winner home with four minutes left to sign the Baggies for a seventh defeat in the campaign.
“We played badly, we were far from being good enough,” added the former boss of Croatia. “I didn’t see it coming.
“I know the pressure [of battling for promotion] but not for us to be so flat and basically not in the game for the majority.
“We just weren’t good enough the whole game. “