When Marseille's players stride out at the Vélodrome on Sunday night for their clash against Lyon, they face a test of character and stamina in their hunt for a place in next season's Champions League as well as a chunky European trophy in the shape of the Europa Conference League.
Jorge Sampaoli's side lost 3-2 to Feyenoord in the first leg of their semi-final on Thursday night at the de Kuip in Rotterdam.