Diego Costa believes Chelsea's key to winning games is the meticulous preparation they do before each fixture under Jose Mourinho.
The Spaniard has been in inspired form this season and has scored nine goals in seven games - although his progress has been hindered by injury of late.
However his goals have propelled Chelsea, who remain unbeaten after nine games, to the top of the table, putting them four points clear of Southampton in second place. The £32 million striker, who joined from Atletico Madrid over the summer has revealed the secret to the Blues' success to date, and says it is all down to the way they prepare to take on opponents.
"Top teams nowadays are pretty much on a level playing field and you need to be super careful about every tiny detail of the contest because any single one of them could make the difference,' he told the latest Champions League Magazine.
"Chelsea is packed full of skilful players and if those of us up front become the first line of defence and help protect the rest of the team, then we are doing an important job,' he added.
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Costa earned his move to Chelsea after the best season of his career to date for Madrid last time round. He bagged 27 goals for the Spanish champions in La Liga, putting him behind only Cristiano Ronaldo and Lionel Messi in the scoring charts. The Brazilian-born ace credits his success to his all-encompassing desire to win.
"Since I was a kid I've always had a fierce hunger for victory inside me"
"Since I was a kid I've always had a fierce hunger for victory inside me," said the 26-year-old. "I've always hated losing. Defeat can be useful for you if - and only if - you draw important lessons from it. My hunger to win is one of my fundamental assets. If one day I lose that desire then I'll not be useful any more."
Costa has formed a successful partnership with fellow summer signing Cesc Fabregas, helping Chelsea reach the top of their Champions League group too. Although the forward is loving life at Stamford Bridge he insists he would have been happy to remain in Spain had Chelsea not come calling.
"I was extremely happy at Atletico and the last year when we achieved so much was the best year of my career as a footballer," he explained.
"However, you always try to improve your life. The opportunity to join this tremendously important club came and while Atleti is a great team, this was a different league, one I'd always wanted to try.
"People always used to say that my game would fit the Premier League perfectly and so the opportunity to sign for an extremely famous club like Chelsea made me super-excited.
'I have to keep on working hard. I still have many years ahead of me in my career so I hope I will be able to play in another Champions League final - to have another opportunity to win this competition.'