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Poisson rates Charlton at 46% — the H2H record provides partial corroboration, though signals are mixed in this Charlton vs Portsmouth encounter.

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Analysis

Portsmouth make the trip to The Valley to face Charlton in Championship, Regular Season - 19. The match kicks off on Tuesday 17 February 2026 at 19:45 UTC.

Current Form

Charlton's overall Championship record this term: 3W 3D 4L from 10 games (1.20 PPG). Last five: L L W D W. They are averaging 0.90 goals per game and conceding 1.20 — a modest attacking output that tempers optimism on the Over 2.5 market. 4 clean sheets in 10 games (40%) reflects a solid defensive base.

In front of their own supporters this season, Charlton have posted 4W 3D 3L at The Valley — 1.50 PPG. At home they are averaging 0.90 goals scored and 1.10 conceded per game. 5 clean sheets from 10 home games (50%) — they are an exceptionally hard side to score against at The Valley.

Portsmouth (all games): 3W 4D 3L across 10 Championship outings this term — 1.30 points per game. Last five: D D W L L. Their scoring rate of 1.00 per game is modest, conceding 1.20 — not a side to back heavily on the Over 2.5 from their form alone. 2 clean sheets from 10 outings suggests some defensive organisation.

Portsmouth's form when playing away from home: 1W 3D 6L across 10 road games this term (0.60 PPG). Away from home they average 0.60 goals scored and 2.00 conceded per game. Their away PPG of 0.60 is notably below their overall 1.30 — form away from home has been a clear weakness this season.

Both sides are running at similar form levels — 1.20 PPG for Charlton against 1.30 for Portsmouth. There is no clear form edge to exploit here; other signals need to take the lead.

H2H Analysis

The head-to-head record is closely matched — Charlton lead 3W to 1W over the last 7 encounters, with 3 draws, though neither side has established a commanding advantage.

Attacking output has been a hallmark of this fixture. At 3.0 goals per game across 7 meetings, the Over 2.5 has a statistically grounded case from the head-to-head record alone. The most recent clash, on 29 Dec 2025, ended 1–2 with Portsmouth winning.

With the win record balanced, the strongest H2H-derived signal is in the goals market. At 3.0 goals per game historically, Over 2.5 is the cleaner angle to extract from the head-to-head data.

Trading & In-Play

Charlton — key trading statistics (76 games, 37 at home): they score before half-time in 60% of fixtures in home games; when goalless at HT, a second-half goal follows 79% of the time; BTTS occurs in 49% of their matches (home games); Over 2.5 goals lands in 46% of games (home games); they keep a clean sheet 41% of the time.

Portsmouth — key trading statistics (76 games, 37 at away): they score before half-time in 73% of fixtures in away games; when goalless at HT, a second-half goal follows 74% of the time; BTTS occurs in 54% of their matches (away games); Over 2.5 goals lands in 54% of games (away games); they fail to score in 33% of games.

BTTS rates are mixed from the trading data — Charlton 45% versus Portsmouth 53%; no strong lean in either direction. The over/under 2.5 picture is inconclusive from the in-play data (Charlton 47% | Portsmouth 53%).

Poisson Model

The Poisson distribution model projects Charlton 1.20 xG and Portsmouth 0.72 xG. These expected goals figures are the primary input: they feed a goal-probability matrix across all scoreline combinations to derive the result and market probabilities below. Underlying strength ratings: Charlton attack 0.764 / defence 0.927 | Portsmouth attack 0.677 / defence 1.209. League average goals — home 1.302 / away 1.154. Charlton's attack strength of 0.764 is below the league average — the 1.20 xG projection reflects a team that scores at a discount to the division norm. Portsmouth bring a strong defensive rating of 1.209 — this is suppressing Charlton's projected output below what their attack strength alone would suggest. Data: 31 Charlton games / 76 Portsmouth games used (CurrentSeason).

Result probabilities: Charlton 46% | Draw 33% | Portsmouth 21%. Fair-value odds: Charlton 2.17 | Draw 3.03 | Portsmouth 4.76. Charlton hold a narrow Poisson edge at 46% — the draw (33%) is close enough to merit draw-inclusive market consideration.

Goals markets: Over 2.5 probability 30% | BTTS probability 37% | Total xG 1.93. Under 2.5 is the strongly backed market at 70% probability — total xG of 1.93 sits well below the 2.5 threshold. The model is projecting a tight, low-scoring match based on both sides' defensive quality. BTTS probability of 37% is moderate — neither team is projected to score with enough certainty to make Yes a clear standalone call.

Picks & Verdict

On the Poisson output, Charlton are the pick at 46% — moderate model lean. Draw probability of 33% warrants consideration of Double Chance or Draw No Bet on Charlton if the outright odds are short.

The Poisson model projects 1.93 xG in total — Under 2.5 at 30% — Poisson-only — limited corroboration confidence — though H2H averaging only 3.0 goals per meeting points in the other direction.

Poisson assigns a 37% probability to BTTS No based on the attack/defence strength model. Form rates corroborate: Charlton 50% | Portsmouth 40% BTTS from recent games.

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