A hat-trick by Kostas Mitroglou took Olympiakos Piraeus to a 3-0 Champions League victory on Wednesday over an Anderlecht side who missed a penalty and a host of other good chances.
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The Greece striker's precision and a fine performance from keeper Roberto gave the Greek side their first points in Group C.
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Anderlecht, with no points and lying fourth in the domestic league, were left to rue their misfiring front line after the Greek champions made the most of limited chances in both halves.
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After several Anderlecht forays, Argentine Javier Saviola exploited disarray in the home defence in the 17th minute to find Mitroglou, who poked the ball past Anderlecht's keeper.
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Anderlecht, beaten 2-0 by Benfica two weeks ago, dominated possession and were awarded a penalty when Andreas Samaris wrapped his arm around Sacha Kljestan at a corner.
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However, Roberto dived to his right to save Aleksandar Mitrovic's spot kick in the 24th minute.