Kylian Mbappe scored twice on his return from winning the World Cup with France as Paris St-Germain fought back to beat Guingamp 3-1 in Ligue 1.
The 19-year-old came off the bench to claim a brace in the final eight minutes, after Neymar had drawn PSG level with a penalty on 52 minutes.
Mbappe, rested for last week’s opener against Caen, had come on at half-time.
He scored four goals at this summer’s World Cup on his way to being crowned Fifa’s young player of the tournament.
Mbappe slotted his first goal neatly to the right of Karl-Johan Johnsson on 82 minutes, before a delightful chip over the Guingamp goalkeeper secured the three points for Thomas Tuchel’s men.
The result ensures PSG maintain their winning start to the season, despite the Ligue 1 champions finding themselves a goal behind after 20 minutes through Nolan Roux’s opener.
After the match, PSG goalkeeper Gianluigi Buffon, who made his debut last weekend, swapped shirts with Guingamp’s Marcus Thuram – the 21-year-old son of Lilian Thuram.
Lilian – the French national team’s most-capped player with 142 appearances – played alongside Buffon at both Parma and Juventus, winning Serie A together twice and playing in the 2003 Champions League final.