Chelsea boss Jose Mourinho will remain cautious with Diego Costa as he continues to experience hamstring troubles.
The Brazilian-born Spanish striker came off in the 75th minute of the Blues' eventual 3-2 victory over Hull City at the KC Stadium on Sunday complaining of soreness in the area that has troubled him throughout the season.
As the title race heats up with two months to go in the campaign, Mourinho knows it is a very important time to monitor Costa's situation especially seeing as he has netted a joint-high 19 goals in England's top flight this term.
"When a striker is playing, the team needs a goal to win the game and with 15 minutes to go the striker, a guy with a lot of experience of hamstring injuries, says 'it is over for me', then it is over for him," said Mourinho.
"He has this problem. He tried to play the Champions League final for Atletico (Madrid, last season) and was injured again and again and again. He has this fragility.
"We know his hamstring is not a strong one. He works hard through the week to compensate the weakness he has there but the injury can come.
"If he is injured then we have (Loic) Remy, we have (Dider) Drogba. We never cry about injured players."
