| August 2025Aug 09 |  Championship | Oxford United 0–1 PortsmouthRegular Season - 1 | W |
| Aug 12 |  EFL Cup | Portsmouth1–2 Reading1st Round | L |
| Aug 16 | Championship | Portsmouth1–2 NorwichRegular Season - 2 | L |
| Aug 23 | Championship | West Brom 1–1PortsmouthRegular Season - 3 | D |
| Aug 30 | Championship | Portsmouth1–0 PrestonRegular Season - 4 | W |
| September 2025Sep 14 | Championship | Southampton 0–0PortsmouthRegular Season - 5 | D |
| Sep 20 | Championship | Portsmouth0–2 Sheffield WednesdayRegular Season - 6 | L |
| Sep 27 | Championship | Ipswich 2–1PortsmouthRegular Season - 7 | L |
| October 2025Oct 01 | Championship | Portsmouth2–2 WatfordRegular Season - 8 | D |
| Oct 04 | Championship | Portsmouth1–0 MiddlesbroughRegular Season - 9 | W |
| Oct 18 | Championship | Leicester 1–1PortsmouthRegular Season - 10 | D |
| Oct 21 | Championship | Portsmouth1–2 CoventryRegular Season - 11 | L |
| Oct 25 | Championship | Portsmouth0–1 Stoke CityRegular Season - 12 | L |
| November 2025Nov 01 | Championship | Birmingham 4–0PortsmouthRegular Season - 13 | L |
| Nov 05 | Championship | Portsmouth0–0 WrexhamRegular Season - 14 | D |
| Nov 08 | Championship | Hull City 3–2PortsmouthRegular Season - 15 | L |
| Nov 22 | Championship | Portsmouth3–1 MillwallRegular Season - 16 | W |
| Nov 26 | Championship | Sheffield Utd 3–0PortsmouthRegular Season - 17 | L |
| Nov 29 | Championship | Portsmouth0–1 Bristol CityRegular Season - 18 | L |
| December 2025Dec 09 | Championship | Swansea 1–0PortsmouthRegular Season - 20 | L |
| Dec 13 | Championship | Portsmouth2–1 BlackburnRegular Season - 21 | W |
| Dec 20 | Championship | Derby 1–1PortsmouthRegular Season - 22 | D |
| Dec 26 | Championship | Portsmouth1–1 QPRRegular Season - 23 | D |
| Dec 29 | Championship | Portsmouth2–1 CharltonRegular Season - 24 | W |
| January 2026Jan 01 | Championship | Bristol City5–0PortsmouthRegular Season - 25 | L |
| Jan 11 |  FA Cup | Portsmouth1–4 ArsenalRound of 64 | L |
| Jan 17 | Championship | Sheffield Wednesday0–1PortsmouthRegular Season - 27 | W |
| Jan 21 | Championship | Watford1–1PortsmouthRegular Season - 28 | D |
| Jan 25 | Championship | Portsmouth1–1SouthamptonRegular Season - 29 | D |
| Jan 31 | Championship | Portsmouth3–0West BromRegular Season - 30 | W |
| February 2026Feb 07 | Championship | Preston1–0PortsmouthRegular Season - 31 | L |
| Feb 14 | Championship | Portsmouth0–1Sheffield UtdRegular Season - 32 | L |
| Feb 17 | Championship | Charlton1–3PortsmouthRegular Season - 19 | W |
| Feb 21 | Championship | Millwall1–3PortsmouthRegular Season - 33 | W |
| Feb 24 | Championship | Wrexham2–1PortsmouthRegular Season - 34 | L |
| Feb 28 | Championship | Portsmouth0–1Hull CityRegular Season - 35 | L |
| March 2026Mar 07 | Championship | Blackburn1–1PortsmouthRegular Season - 36 | D |
| Mar 10 | Championship | Portsmouth1–2SwanseaRegular Season - 37 | L |
| Mar 16 | Championship | Portsmouth0–1DerbyRegular Season - 38 | L |
| Mar 21 | Championship | QPR6–1PortsmouthRegular Season - 39 | L |
| April 2026Apr 03 | Championship | Norwich1–1PortsmouthRegular Season - 40 | D |
| Apr 06 | Championship | Portsmouth2–2Oxford UnitedRegular Season - 41 | D |
| Apr 11 | Championship | Middlesbrough0–1PortsmouthRegular Season - 42 | W |
| Apr 14 | Championship | Portsmouth2–0IpswichRegular Season - 26 | W |
| Apr 18 | Championship | Portsmouth1–0LeicesterRegular Season - 43 | W |
| Apr 21 | Championship | Coventry5–1PortsmouthRegular Season - 44 | L |
| Apr 25 | Championship | Stoke City1–3PortsmouthRegular Season - 45 | W |
| May 2026May 02 | Championship | Portsmouth1–1BirminghamRegular Season - 46 | D |
