West Bromwich Albion goalkeeper Ben Foster feels parent club Birmingham City will heap more misery on Chelsea this week.

The Baggies defeated Chelsea on Saturday and on-loan Foster feels Brum can also knock Chelsea out of the FA Cup.

"I think Blues' home record speaks for itself, doesn't it?," said Foster. "They have only lost once at St Andrew's all season and that was against Forest last week.

Before that, they had not been beaten in 20-odd games there. Chelsea will be up against it. Birmingham won't be giving them a minute's peace.

"Last year it was a very one-sided game. But we stuck together and won the game.

"From what I've seen this afternoon, I don't think Chelsea had the same energy as last year. To me, they don't look the same side."