The Blues manager Jose Mourinho hailed Loic Remy after the French striker's goal handed Chelsea three points with a 3-2 win on Humberside.
The former QPR striker Remy scored two minutes after replacing the injured Diego Costa at Hull, restoring the west London side's six point lead at the top of the Premier League table.
However, after the clash at the KC Stadium, Mourinho says Chelsea have other options if Costa is injured for the league return in two weeks against Stoke City.
He told Sky Sports: "Every time he plays, scoring or not scoring, he gives us everything he has to give.
"Sometimes it is movement, sometimes it is defensive contributions, sometimes he is scoring goals.
"This is a goal that means two extra points and I'm pleased for the boy, he is a fantastic kid."
Mourinho also said he was calm with his players during half-time after Hull came back from two goals down to score twice in the first half.
"There are team talks and there are team talks, our one was a calm one.
"Not to reflect on the mistakes we made defensively, I had complete trust our players would be back to a good performance defensively.
"We had to start the second half exactly in the same direction.
"The victory is very, very imporant obviously, to go back to three points after a draw in the last game at home.
"The performance in my opinion was very, very good. We played fantastic football until the 2-0, obviously we lost a little bit of quality after their two goals."