The Blues hadn’t lost since March stretching 27 matches, but suffered a 4-0 hammering at the hands of the Tangerines, with skipper Joe Morrell also seeing red.
It was an appalling second-half display from John Mousinho’s men, who have also been knocked off the top of League One by Bolton. Here’s our Pompey player ratings...
17. Ben Stevenson
(Replaced Colby Bishop on 80 mins) Photo: Jason Brown
18. Portsmouth defender Joe Rafferty (17) during the EFL Sky Bet League 1 match between Portsmouth and Blackpool at Fratton Park, Portsmouth, England on 25 November 2023.
Joe Rafferty looks to launch a Pompey attack against Blackpool. Picture: Jason Brown/ProSportsImages Photo: Jason Brown
19. Ryan Schofield
Sub Not Used. Photo: Jason Brown
20. Ryley Towler
Sub Not Used. Photo: Jason Brown