Bastia missed out on a fourth successive Ligue 1 win after drawing 1-1 with Caen.
PSG are on the brink of winning the Ligue 1 title after Caen stunned Lyon 3-0 on Saturday, while Metz were relegated.
Ten-man Bastia maintained their late-season revival and ended Rennes' six-match unbeaten run with a 1-0 victory.
St Etienne slipped up in the race for a Champions League spot in Ligue 1 after going down 1-0 to Bastia on Saturday.
Top scorer Alexandre Lacazette continued his superb form for Lyon, who took top spot in the table after beating Evian.
A late equaliser denied Metz all three points, while Bastia and Guingamp produced much needed wins as we look at all today's Ligue 1 action.