Wigan refused to wilt though and continued as a threat in the game, although Charles N'Zogbia's 25-yard free-kick - easily gathered by Reina - was their only effort on target before the break.
Copenhagen almost punished Chelsea's profligacy when N'Doye wrong-footed Blues keeper Petr Cech with a 20-yard free-kick only to be denied by the post with an effort nearly as striking as the visitors' pink shirts.