Slaven Bilic has no concerns over his side's desire or hunger, but acknowledged West Brom's Premier League struggles are down to "a bit of everything".
West Brom were hard done by as they lost to Manchester United last week, having a penalty harshly overturned following a VAR review.
Bilic's side impressed at Old Trafford, yet their sixth defeat of the season left them in 19th, without a win to their name.
They are above only Sheffield United, who visit the Hawthorns on Saturday in what could already prove a crucial clash at the bottom.
"We are hungry enough, I'm sure they are the same, it'll be a very interesting and big game," Bilic said.