Pompey suffered another second half capitulation as they fell to a heavy home defeat at the hands of Ipswich.
Macauley Bonne caught Gavin Bazunu in possession to ensure that Danny Cowley's side trailed at the break following an even 45 minutes.
And Conor Chaplin, Sone Aluko and Wes Burns all added further goals following restart to secure a 4-0 win for the Tractor Boys.