After breaking clear Chelsea's Diego Costa goes down in the box under pressure from Yevhen Khacheridi of Dynamo Kiev & Aleksandar Dragovic of Dynamo Kiev but is not awarded a penalty - here he shows his frustration with the assistant referee Chelsea v FC Dynamo Kiev (Kyiv) - UEFA Champions League - Stamford Bridge - London - 04/11/2015 Mandatory Credit: Andrew Fosker / Seconds Left