Marseille dropped their third consecutive match on Friday, losing 1-0 to Nantes.
The loss forced Marcelo Bielsa to concede Marseille's chances of winning Ligue 1.
"A team that loses three consecutive matches in the closing stages of the championship cannot hope to win the title," Bielsa said.
"Our play as a team wasn't good enough and it is purely the coach's responsibility.We played poorly on an individual level too. We could have won but we played negatively and without fluency.
"We could have avoided the way they upset our equilibrium and also missed chances to equalize at the end."
Via FourFourTwo