Sunderland have only lost one of their last three matches, against Manchester City.
Sunderland had a daunting fixture list in February, with matches against City, Liverpool and Manchester United scheduled.
Yet, the Black Cats have responded to the challenge by claiming four points in those three games.
Strangely enough, their best performance arguably came in the match which they lost against City - and Allardyce admits that he still feels a little disappointed about that result.
“The disappointing thing was no points against Manchester City,” Allardyce said.
“We played better against City than we did against Manchester United. But that performance didn’t bring us a result, as we missed too many chances, and that’s the only real disappointment.”
Sunderland’s improvement has been sparked by the impact that their January additions have made.
Wahbi Khazri, Lamine Kone, Dame N’Doye and Jan Kirchhoff were all brought to the Stadium of Light in the previous transfer window, and quartet have all made a good impact.
Khazri and N’Doye have both added more threat to Sunderland’s attacking ranks, while Kone and Kirchhoff have helped Allardyce’s side look much less porous at the back.
Sunderland’s tough February is set to continue at the weekend, as they face a trip to Upton Park on Saturday.
The Hammers have lost just two of their last 17 matches, but if Allardyce’s men can avoid defeat they could move out of the drop zone.