Chelsea manager Jose Mourinho hailed the impact of Willian and Kurt Zouma after the west London side ran out 3-0 winners over Watford at Stamford Bridge.
The Brazilian winger scored the opener in the 58th minute with a good strike to the top corner of the net.
The Blues increased their deficit after Loic Remy and defender Zouma found the net to put Chelsea through to the FA Cup fourth round.
And Mourinho had nothing but praise for Willian and Zouma's all-round display against Championship side Watford.
“Willian is the kind of player that without scoring goals he gives so much to the team,” Mourinho said.
“He creates, he always has a good dynamic. When the team lose the ball he’s probably the first defender because he reacts in a very effective way, he presses immediately and recovers balls. Willian always gives us a performance.”
The Portuguese manager added: “Zouma had another good game. He had matches with mistakes in pre-season, against Werder Bremen and in Hungary, but his development has been fantastic.
“His physical condition is outstanding but the way he sees the game, reads the game, analyses the game and makes decisions is very good.”