Thierry Henry suffered defeat in his first match as a head coach when Monaco slumped to a 2-1 loss at Strasbourg on Saturday.
The principality club have failed to win in 11 games in all competitions since the opening weekend of the French top-flight season, and are only above bottom team Guingamp on goal difference.
Monaco, who were runners-up to PSG last season, are now 24 points adrift of the reigning champions after they cruised to a 5-0 thrashing of Amiens at the Parc des Princes despite resting several key players.
A dreadful error by Monaco’s third-choice goalkeeper Seydou Sy gifted Strasbourg midfielder, Adrien Thomasson, an early opener, and substitute Samuel Grandsir was sent off midway through the second half. A disappointing first half ended poorly for Henry and Monaco, as captain and star striker Radamel Falcao was forced off injured.