Sam Allardyce has admitted that West Ham United cannot win the Championship title this season.

The Hammers boss has now pinned his hopes on automatic promotion, making this week's match with Peterborough a must-win.

"I think that's gone now. I can't see Southampton losing three or four on the trot for us to make up those points," Allardyce said.

"We've slipped up, they haven't and credit to them because they have been there all season.

"If we deliver eight clean sheets in our last eight games, I think we'll go up automatically – but we've had seven draws and three wins in our last 10 games when it should have been the other way round."

West Ham are currently third in the Championship, four points off second-placed Reading.