Former Chelsea boss Glenn Hoddle says Frank Lampard's team are underperforming.
Chelsea did just enough to beat FA Cup opponents Hull City 2-1 on Saturday.
Afterwards, Hoddle stated: “I worry about Chelsea sometimes because they do make things hard for themselves.
“They were totally in control of the game but they didn't kill Hull off and in the end they're hanging on.
“It's becoming a pattern now. Against a better opposition they probably would have drawn or lost that game. They've got to put it right.
“I always think teams are in the game against Chelsea. The game is never dead. They have to put that right as a team."