Ligue 1 champions Paris Saint-Germain threw away a two-goal lead for a second successive league game as Troyes battled back to earn a 2-2 draw at the Parc des Princes.
The hosts looked to be in control when Marquinhos and Neymar gave them a comfortable first-half lead, but a series of defensive errors allowed the visitors to fight back in an entertaining affair.
Having surrendered a 3-1 advantage in last week's 3-3 draw with Strasbourg, PSG were on the wrong end of another turnaround when Ike Ugbo and Florian Tardieu scored either side of the break.
Neymar also had two goals disallowed as PSG laboured to another underwhelming result, as the pressure on head coach Mauricio Pochettino continues to mount.
The hosts looked on course for a routine win when Marquinhos turned in Angel Di Maria's excellent cross to open the scoring after five minutes, with Neymar doubling the lead from the spot 20 minutes later after Erik Palmer-Brown clumsily felled Kylian Mbappe.
But Troyes were soon gifted a route back into the game when Ugbo intercepted Nuno Mendes' terrible pass to fire into the bottom-left corner after half an hour.
PSG went close to re-establishing their two-goal advantage when Lionel Messi side-footed against the post, only for Neymar to be ruled offside when smashing home the rebound.
The visitors punished another PSG error when Presnel Kimpembe hauled down Renaud Ripart after the interval, allowing Tardieu to execute an audacious panenka to level the scores, before Neymar saw another goal chalked off after Mbappe's foul in the build-up.
Marquinhos sent a firm header wide and Messi crashed a long-range shot against the bar as the hosts chased a late winner, only for the disciplined visitors to claim a point at a frustrated Parc des Princes.
What does it mean? PSG drop rare home points
While PSG remain unbeaten in 21 Ligue 1 home games (18 wins, three draws), they have now gone two home matches without a win for the first time since doing so between February and April 2021 (three consecutive defeats).
The result will do little to quieten the discontent around Pochettino's team, with the Argentine under severe pressure despite wrapping up PSG's 10th Ligue 1 title last month.
Neymar continues fine form
Despite PSG flattering to deceive in the second half of the season, Neymar's strong individual performances have proven crucial to their title win.
After converting his first-half penalty, the Brazilian has contributed to goals in each of his last six league games (seven goals and three assists in total).
Tardieu on the spot
In a contest which revolved around two spot-kicks, Tardieu kept his nerve to beat Keylor Navas with a sumptuous lob as the visitors earned a creditable draw.
The 30-year-old has scored four Ligue 1 goals this season, each of them penalties.
PSG travel to Montpellier for their penultimate outing of the Ligue 1 season next Saturday, while Troyes host Lens on the same day.