Marseille inflicted a second successive Ligue 1 defeat on St Etienne as Michy Batshuayi and Georges-Kevin Nkoudou scored either side of half-time.The opener came when Brice Dja Djedje produced a superb drag-back and cross which was missed by Lucas Ocampos and scuffed back across goal by Nkoudou for Batshuayi to score with a bobbling left-foot shot.The second was just as untidy as Pierre-Yves Polomat was caught in possession and Batshuayi fed Nkoudou, who slipped but recovered to score via a deflection off defender Loic Perrin.The win was Marseille's fourth in five games in all competitions and lifted them to 12th in the table, five places and four points behind ASSE.