Manchester United boss Ole Gunnar Solskjaer admits facing West Brom on Sunday is a test.
United dropped two points at home to Everton last Saturday.
Solskjaer said: “Of course it's an important game for us this weekend.
“And it's an important spell. Every game you tick one off and it's less and less possibility to catch up points on the teams in front of you.
“That's what we want to do and that's what we're here to do. Sunday is a big one for us in that respect, to get back to winning ways. The two points dropped against Everton was disappointing when it's the last kick of the ball, but we bounced back really well in the cup against West Ham - we're through, we're in the quarters - and that was a step in the right direction. Another clean sheet."
United have won just one of their last four Premier League games.
