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It was a really end-to-end opening half and on 20 minutes Jourdren had to be alert again from a Christophe Mandanne shot with Thibault Giresse's follow-up effort blocked.
The opening goal finally came on 25 minutes and it was worth waiting for, as Tiene struck a 30-yard free kick into the top corner with his left foot.
The hosts came out strongly in the second half and could have got a goal back after 10 minutes, but Mandanne's effort went not too far wide of the post.
They did pull one back with half-an-hour to play through Yatabare, but despite some pressure, Montpellier held on for the three points in this crucial clash.