London - New signings Diego Costa and Cesc Fabregas made an instant impact for Chelsea as they launched their English Premiership title bid with a confident 3-1 win at promoted Burnley on Monday.
In a fiery atmosphere, the home side took a surprise lead in the 14th minute with a superb drive from Scott Arfield after a fine pull back from Matt Taylor.
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But Chelsea quickly got back on level terms, three minutes later, with Brazilian-born Spain international Costa, a close season signing from Atletico Madrid, scoring on his English Premiership debut - firing in after a Branislav Ivanovic cross-shot had come out off the post.
Within four minutes, Jose Mourinho's side had the lead - Fabregas providing a beautiful first time pass to German World Cup winner Andre Schurrle who confidently drove home.
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Burnley looked shell-shocked and their manager Sean Dyche will be disappointed with the defending for Chelsea's third as Ivanovic was unchallenged as he slotted in a Fabregas corner in the 34th minute.