Bottom side Hull City are still searching for their first win under new boss Ruben Selles following a 1-1 draw with Watford and a 2-1 defeat at Coventry.
The Tigers are two points from safety but have played a game more than three of the four sides above them - and two more than Portsmouth.
Swansea, who are 10th, have lost just one of their past five (W2 D2) and are seven points behind the play-off spots heading into the weekend.
Hull City have won just one of their past nine league games against Swansea City (D5 L3) and have failed to win any of their past four against the Welsh side.