Diawara refused to rule out that Marseille, who are now six points behind league leaders Paris Saint-Germain, could still win the title.
"There is no crisis," Ligue1.com quotes Diawara as saying. "Naturally, after a defeat, you're never in high spirits and I'm disgusted because I know we can do a lot better.
"Still, we remain in third place and we're lucky enough not to be too far off the two top teams.
"If we want to stay among the top places, we can't afford to pay attention to what's going on below us on the table. If you look down, you put even more pressure on yourselves. I know that we can still catch Paris and Lyon. I'm sure of what I'm saying."
Marseille travel to Evian TG on Saturday.