Sheffield Wednesday boss Alan Irvine admitted "everyone is very low" after the Owls' 3-2 defeat at Cardiff. Defeat leaves the Owls one point behind Palace who host the Baggies on Monday with victory for the south London side enough to guarantee them survival and send Irvine's team into League One.
Any other result means next week's clash with Palace at Hillsborough would mean the Owls could retain their Championship status with victory.
Irvine said: "I had hoped that we could hold on to our lead and I am very disappointed that we were unable to do that.
"We played better with the ball than without it and if I thought we could score twice at Cardiff then I would expect to have won the game.
"I have not been in this position with a club before but I will be going to watch Crystal Palace play West Brom on Monday hoping for an Albion victory.
"I believe I should be there to assess Palace whatever the result rather than watch the match on television.
"All players have to cope with pressure and the Palace lads will also have to as they expect West Brom to give them a hard game just as Cardiff have given us today.
"We are where we are because we haven't scored enough goals and everyone is very low at the moment."