A hat-trick from Alexandre Lacazette earned Lyon a 3-0 victory over Saint-Etienne in the Rhone derby.

With Ligue 1 leader Paris Saint-Germain hammering Toulouse 5-0 to extend its lead at the summit yesterday (AEDT), Hubert Fournier's men could not afford to slip up in the clash with their local rival a day later.

Lacazette had a major role in dispatching a Saint-Etienne side which has been inconsistent of late, opening the scoring after a Loic Perrin slip four minutes before half-time.

When Stephane Ruffier spilled Rafael's effort just prior to the hour, Lacazette converted the rebound before adding a third late on when he collected Jordan Ferri's pass and rounded the visiting goalkeeper.

Lyon — unbeaten in five league matches — remains 10 points off PSG going into the international break with traditional challenger Marseille struggling for consistency.

After consecutive wins, it was beaten 1-0 by Nice courtesy of Valere Germain's 16th-minute winner, while Bordeaux came from a goal down to beat Monaco 3-1 at the Stade Matmut Atlantique.

Helder Costa opened the scoring 23 minutes in but goals from Nicolas Maurice-Belay and Cedric Yambere turned the game around before half-time.

Czech midfielder Jaroslav Plasil sealed the points with his third goal of the season shortly after the restart as Bordeaux moved 11th — three points off its host, which is ninth.