Diego Costa on target for Chelsea in Turkish charity tournament Chelsea beat Fenerbahce but lost to Besiktas as they continued their pre-season build-up by participating in a Turkish charity competition in aid of the Soma mining disaster. Chelsea striker Diego Costa clashes with Bruno Alves following a reckless challenge by the Fenerbahce defender. John Sibley / Action Images Sky Sports Aug 9, 2014 at 5:47a ET Chelsea beat Fenerbahce but lost to Besiktas as they continued their pre-season build-up by participating in a Turkish charity competition in aid of the Soma mining disaster. Jose Mourinho's men won their opener 2-0 and then fell 1-0 to a late goal from Besiktas, who therefore won the event. The three sides played each other in a trio of 45-minute contests and Mourinho named a strong side for Chelsea's first match against Fenerbahce. The Blues had an Oscar goal disallowed for offside but then almost fell behind, Petr Cech pulling off a superlative save to keep out a close range Alper Potuk header. Diego Costa then produced a moment of magic to open the scoring, shimmying past a pair of challenges before finding the far corner with a fine strike. MORE CHELSEA Mourinho takes swipe at Arsenal's Wenger Eva Carneiro reportedly leaves club after fallout Arsenal fans boycott company because of Diego Costa Gunners fan asks for refund for blocked view And Chelsea extended their lead on the half-hour, Branislav Ivanovic slamming the rebound into the net after Volkan Demirel had done well to keep out a well-struck Andre Schurrle free-kick. Besiktas had beaten Fenerbahce 1-0 earlier, meaning their match against Chelsea would decide the winners of the charity event. Didier Drogba almost gave the Blues the lead with a fine free-kick but he was denied by an excellent save from Cenk Gonen. Former Chelsea man Demba Ba come off the bench for Besiktas and he had a shot saved by Cech after making a powerful run forward with just a couple of minutes remaining. But Besiktas won the game from the resulting corner, a loose ball falling perfectly for Ersan Gulum, who turned the ball into the gaping net.