On-loan Arsenal striker Folarin Balogun ran through to score a remarkable 96th-minute equaliser as Reims held 10-man Ligue 1 leaders Paris Saint-Germain to a 1-1 draw on Sunday.
It looked like Neymar's strike early in the second half would be enough for PSG to take all three points despite substitute Marco Verratti being sent off shortly after that goal.
They remain in mid-table but have now drawn with the Parisians twice this season, their collective strength allowing a team of hungry young players to hold their own against PSG's superstars.
PSG have now dropped points in three of their four league games in 2023, and while they remain three points clear of Lens at the top of the table, their form is a concern with the first leg of their Champions League last-16 tie against Bayern Munich now little over two weeks away.
Galtier fielded Lionel Messi, Kylian Mbappe and Neymar all together in his starting line-up for the first time since the World Cup as PSG took to the field wearing their fourth kit with players' names in Mandarin to mark the Lunar New Year.