Pierre-Emerick Aubameyang came off the bench to inspire Saint-Etienne to a 2-1 victory against Ligue 1 leaders Paris Saint-Germain at the Parc des Princes on a day of contrasting fortunes for two of the league's leading strikers.
Aubameyang, who was deemed only fit enough for a place among the substitutes, induced Mamadou Sakho to steer beyond his own goalkeeper ten minutes into the second half before adding a goal of his own on 73 minutes, as Zlatan Ibrahimovic saw red for a rash challenge on goalkeeper Stephane Ruffier.
"It's a great achievement, thanks to all the team. It's pleasing to beat this big team here. The coach put me on, he knew that I would be fresh. I'm a competitor, I like to start but it was well played on his part," said a delighted Aubameyang, who increased his league tally to seven goals.
Guillaume Hoarau grabbed a late consolation goal for PSG but it couldn't prevent Carlo Ancelotti's side crashing to their first league defeat of the season.
Victory for Saint-Etienne saw them climb to fourth in the table, level on points with Lyon, while PSG's lead at the top remains at three points with chasing Toulouse and Marseille both in action on Sunday.