Paul Hart insists Portsmouth are still looking over their shoulders after the 3-0 defeat to Arsenal.
A Nicklas Bendtner brace and a Carlos Vela strike did the damage at Fratton Park on Saturday as the Gunners ensured their qualification for next season's UEFA Champions League.
As for the South Coat outfit, they remain on 38 points and Hart is doubtful that will be enough to stay up, even if Arsenal counterpart Arsene Wenger claims Pompey are safe.
"I've just spoken to Arsene and he thinks we've got enough, but I'm not that confident," the Pompey manager told Sky Sports.
Regarding the match Hart added: "For long periods in that second-half we took control.
"I thought we got a foot-hold in it and again created another four chances but the big difference between us was they took theirs and we didn't."
Portsmouth carved out several chances against a weakened Arsenal side and Hart felt referee Lee Mason did his side no favours by awarding the Gunners a first-half penalty.
He said: "I don't think it was a penalty...it was a definite great tackle."
When asked if the 41st minute spot-kick changed the game Hart added: "It made life very difficult against an extremely good Arsenal side."