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FOOTBALLChampionshipmatch-preview08/09/20262 min readMatchSense Model

Charlton vs Portsmouth Prediction — Model Probabilities for 12 September 2026

MatchSense model probabilities for Charlton vs Portsmouth on 12 September 2026. Form, the table and the head-to-head behind the numbers.

Key takeaways

  • The model's highest probability outcome is Charlton at 37.2%.
  • Charlton: 37.2%.
  • Portsmouth: 34.2%.
  • Draw: 28.6%.
  • 2 further markets for this fixture are priced on the analysis page.
  • Charlton are 5th in the table, Portsmouth 17th.
  • The estimate is revised when confirmed team sheets arrive.

Charlton take on Portsmouth on 12 September 2026, 14:00 UTC in Championship. Below are the MatchSense model's probabilities for this fixture, alongside the form and head-to-head context behind them.

Charlton sit 5th in the Championship table on 11 points from 6 games, with Portsmouth 17th on 6 points — 12 places apart in a 24-team competition.

Who does the model favour?

OutcomeModel probability
Charlton37.2%
Portsmouth34.2%
Draw28.6%

Read a probability as a long-run frequency: a 55% call means fixtures that look like this one finish that way roughly 55 times in 100.

What each side brings into this

Charlton bring a record of 3-3-4 from their last 10, keeping 2 clean sheets. Portsmouth have won 6, drawn 1 and lost 3 of their last 10, keeping 4 clean sheets.

The head-to-head

The two have met just twice in our records. They last met on 17 February 2026: Charlton 1-3 Portsmouth, Portsmouth taking it.

Beyond the match result, the model also prices 2 further markets for this fixture — total goals, both sides scoring and goal-margin lines among them — each with a modelled price, the difference against the market, and a confidence band. Those sit on the match analysis page.

How are these numbers produced?

The model blends both teams' attacking and defensive strength, Elo ratings, recent form, home advantage and player availability. The numbers are revised when confirmed lineups arrive, because one missing starter can move them several points.

The full method is in How the MatchSense Prediction Model Works and How to Read Football Prediction Probabilities.

Go deeper


This page is analytical and educational. Probabilities are not guarantees of any result.

Frequently asked questions

Who is more likely to win, Charlton or Portsmouth?

The MatchSense model gives Charlton the highest probability at 37.2%. No outcome takes half the probability here, so the model reads it as genuinely open.

When do Charlton and Portsmouth play?

Kick-off is scheduled for 12 September 2026, 14:00 UTC in Championship.

Which markets are analysed for Charlton vs Portsmouth?

Alongside the match result shown on this page, the model prices 2 further markets — total goals, both sides scoring and goal-margin lines among them — each with a modelled price, the difference against the market and a confidence band, on the match analysis page.

What happened the last time Charlton played Portsmouth?

They last met on 17 February 2026, Charlton 1-3 Portsmouth. Across both meetings, Charlton have won 0, Portsmouth 2, with 0 drawn.

How reliable is this estimate?

The model is scored against past results, so a 60% probability has historically landed near 60% of the time. A single match remains uncertain.

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