Marseille edged past Sochaux to set up a French Cup final against Ligue 1 champions Paris St-Germain.
On-loan Newcastle winger Florian Thauvin was the match-winner, finishing off a team move in the second half.
The club are currently struggling in 15th place in the French league, just six points above the relegation zone.
Laurent Blanc's PSG side can complete a league and cup double for a second consecutive season with victory in the final on Saturday, 21 May.
- 22TardieuBooked at 85mins
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- 19Toko Ekambi
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- 6Pires da FonsecaBooked at 46mins
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- 5Abou Diaby
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- 26Dja Djédjé
- 29Zambo Anguissa
- Benoît Millot
- Shots on Target