Jose Mourinho says Chelsea's medical department should not be held responsible for Diego Costa's hamstring injury suffered against Stoke City.
The 26-year-old did not feature for Spain during the international break but he only lasted ten minutes against Mark Hughes' side on Saturday afternoon.
Loic Remy and Didier Drogba are expected to continue in the offensive department ahead of tough games against Manchester United and Arsenal this month.
"If my medical department decides to take four weeks to recover Diego [Costa] this would not happen but in football we need risks," Mourinho told Sky Sports.
"I risk sometimes, as a manager in a result I don't like.
"But in all the scans they did two days ago the muscle was clear, the image was clear and the player trained twice 100%, when he did much more than he did today.
"We put him in dozens of actions and the result was correct. My medical department is fantastic so there is no problem. Next week plays [Loic] Remy and [Didier] Drogba, we wait for Costa again. For sure with that injury it will be a couple of weeks minimum."
Meanwhile, the Portuguese was full of praise for Charlie Adam who scored one of the most impressive goals in Premier League history.
"It was a fantastic goal, every super player in the world would like to score a goal like that. Diego Maradona, to Lionel Messi to all these brilliant players," Mourinho said.
"Not all of them did score that goal in their careers. When my goalkeepers plays in the limit of the box he has to read the game and know the quality of the opponent, we work on that a lot.
"Charlie Adam has condition for a 50-meter shot, so normally he would anticipate the moment we lost the ball but it's a great goal."