The result leaves Monaco third and Marseille fifth, after a pulsating game between the south coast rivals Marseille remain unbeaten at home this season but Monaco centre-forward Wissam Ben Yedder gave the visitors the lead on seven minutes.
But Ben Yedder's left foot strike from the edge of the box was followed swiftly with a straight red for Guillermo Maripan for holding Vitinha on ten minutes. Roving Marseille striker Pierre-Emerick Aubameyang levelled to 1-1 on 39 minutes on a noisy night at the Velodrome after an off-side decision on his close range tap in was overruled by VAR.
Shortly before half-time though Monaco went 2-1 up when Ben Yedder put the elegant Maghnes Akliouche through on a counter-attack. Marseille came out fighting in the second half and their Argentine defender Leonardo Balerdi made it 2-2 after rampaging forward as his low drive flew in from 25-yards.