Costa at the double as Blues end pre-season with win
Diego Costa fired a warning to English Premier League defenders with a quick-fire double to give Chelsea a 2-0 win over Real Sociedad.
The Brazilian-born Spanish international has been in fine form for the Blues in pre-season since his summer move from Atletico Madrid.
He will be hoping the goals continue to flow after he scored his first goals at Stamford Bridge against the Spaniards.
It took barely a minute for Costa to open the scoring when he unerringly slid the ball into the back of the net after receiving a pass from Ramires.
The 25-year-old then pounced to tap home a rebound on seven minutes after Andre Schurrle's curling shot struck the post.
Manager Jose Mourinho was left purring over his new striker as he said: "What can we expect? Diego is a team player who works hard, he's not just about goals.
"It's about his defensive work, mentality and ambition. This is the player we bought and we were waiting for since last season. This is why we didn't buy a striker in the winter market.
"We were waiting for him, we have him and hopefully everything goes well.
"He looks adapted to the team, and the Premier League, not just Chelsea, should be happy.
"Sometimes we lose important players going to other countries and sometimes we bring new top players here."
Sources: BBC, YouTube