Chelsea eased past Watford to make the FA Cup fourth round on Sunday to keep their hopes of a quadruple alive.

The Blues netted three goals in 14 minutes in the second half to see off a stubborn Hornets side at Stamford Bridge.

Willian, Loic Remy and Kurt Zouma were all on the scoresheet to give Jose Mourinho's men a 3-0 victory.

The Blues boss admitted he had some concerns with the match still goalless at the break and felt bringing on Diego Costa and Willian was a key factor to the win.

He added: "I was worried at half time, the game was always under control but we weren’t strong enough to score in terms of our attacking dynamic to score, and in these matches when you don’t score you always have that risk.

"They didn’t build enough to score a goal but in football you can score a goal in an isolated action; a set-piece or a mistake by a defender.

"I was worried in the first half because our dynamic wasn’t good enough. We had the game under control, we used the ball well, [Gary} Cahill and Zouma had no problems but it was important for us to make changes to try to change the game."