Paris Saint-Germain head coach Mauricio Pochettino insisted Kylian Mbappe's below-par display was not solely to blame for Sunday's 2-0 defeat against Monaco.
In-form Monaco upset Ligue 1 champions PSG in a blow to their title hopes as the Parisians slipped four points behind leaders Lille with 12 games remaining.
PSG have already lost six Ligue 1 games this season, their worst tally in a single campaign since the beginning of the Qatar Sports Investment (QSI) era in 2011/-2, and their worst since the 2010-11 campaign (eight).
Mbappe grabbed global headlines in midweek with his hat-trick against Barcelona in the Champions League but Monaco put extra work into minimizing his impact in the French capital.
Pochettino, though, leapt to the defense of Mbappe – who continues to be linked with LaLiga champions Real Madrid.
"Today, it's not only Kylian but the whole team that hasn't been at the level," Pochettino said post-game.
"That didn't show what it takes to win. But as I said, the first person responsible is the manager and I take responsibility for it.
"When you lose, the first person responsible is the manager and I fully assume it."