Gillingham 0-1 Portsmouth – Result & Analysis
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Poisson rates Portsmouth at 52% — current form provides partial corroboration, though signals are mixed in this Gillingham vs Portsmouth encounter.
✍️ Match Preview
Analysis
Portsmouth make the trip to Priestfield Stadium to face Gillingham in League One, Regular Season - 20. The match kicks off on Saturday 27 November 2021 at 15:00 UTC.
Form & Momentum
Gillingham have collected 0.90 PPG across 10 League One outings this season: 2W 3D 5L. Last five: D D D L L. They are averaging 0.70 goals per game and conceding 1.30 — a modest attacking output that tempers optimism on the Over 2.5 market. 3 clean sheets from 10 outings provides some defensive foundation. Both teams have scored in just 30% of their matches, indicating a tendency toward clean sheets or low-scoring outcomes. This season is still relatively young for Gillingham, so this record blends games from this season and last.
Gillingham at Priestfield Stadium this season: 2W 3D 4L from 9 home games — 1.00 PPG on home soil. At home they are averaging 0.78 goals scored and 1.44 conceded per game. BTTS has landed in 56% of their home matches — a rate that supports the Yes angle in this fixture.
Portsmouth's overall League One record this term: 5W 2D 3L from 10 games (1.70 PPG). Last five: W D W W W. They are scoring at 1.60 per game and conceding 1.40. 4 clean sheets in 10 outings (40%) underlines their defensive solidity. This season is still relatively young for Portsmouth, so this record blends games from this season and last.
Portsmouth's form when playing away from home: 3W 3D 4L across 10 road games this term (1.20 PPG). Away from home they average 1.10 goals scored and 1.20 conceded per game. 4 clean sheets from 10 away games (40%) shows they are capable of shutting up shop on the road. Their away PPG of 1.20 is notably below their overall 1.70 — form away from home has been a clear weakness this season.
On a straight form reading, Portsmouth are the stronger side — 0.80 PPG clear of the hosts (1.70 vs 0.90). Backing them with draw insurance is the conservative play if the outright away price appears short.
Trading
Gillingham half-time and goal-timing data (19 games, 9 at home): they score before half-time in 67% of fixtures in home games; when goalless at HT, a second-half goal follows 80% of the time; BTTS occurs in 56% of their matches (home games); Over 2.5 goals lands in 33% of games (home games); they fail to score in 32% of games.
Portsmouth half-time and goal-timing data (19 games, 9 at away): they score before half-time in 56% of fixtures in away games; when goalless at HT, a second-half goal follows 86% of the time; BTTS occurs in 44% of their matches (away games); Over 2.5 goals lands in 56% of games (away games); they keep a clean sheet 42% of the time.
BTTS rates are mixed from the trading data — Gillingham 58% versus Portsmouth 42%; no strong lean in either direction. Under 2.5 goals has backing from the in-play data — both teams register low Over 2.5 rates (Gillingham 26% | Portsmouth 53%).
Poisson Model
The Poisson distribution model projects Gillingham 0.72 xG and Portsmouth 1.35 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: Gillingham attack 0.571 / defence 1.202 | Portsmouth attack 0.850 / defence 1.083. League average goals — home 1.168 / away 1.324. Gillingham's attack strength of 0.571 is below the league average — the 0.72 xG projection reflects a team that scores at a discount to the division norm. Data: 19 Gillingham games / 19 Portsmouth games used (CurrentSeason).
Result probabilities: Gillingham 20% | Draw 28% | Portsmouth 52%. Fair-value odds: Gillingham 5.00 | Draw 3.57 | Portsmouth 1.92. Portsmouth hold a narrow Poisson edge at 52% — the draw (28%) is close enough to merit draw-inclusive market consideration.
Goals markets: Over 2.5 probability 34% | BTTS probability 38% | Total xG 2.07. Under 2.5 is the strongly backed market at 66% probability — total xG of 2.07 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 38% is moderate — neither team is projected to score with enough certainty to make Yes a clear standalone call.
Final Verdict
Poisson rates Portsmouth as the most likely outcome at 52% — moderate model lean. Current-season form corroborates the Poisson lean — partial multi-source support. Draw probability of 28% warrants consideration of Double Chance or Draw No Bet on Portsmouth if the outright odds are short.
The Poisson model projects 2.07 xG in total — Under 2.5 at 34% — Poisson-only — limited corroboration confidence.
Poisson assigns a 38% probability to BTTS No based on the attack/defence strength model. Form rates are neutral: Gillingham 56% | Portsmouth 40%.
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💡 Key Insights
🏟️ Match Context
• Fixture: Gillingham vs Portsmouth | Competition: League One, Regular Season - 20 | Venue: Priestfield Stadium • Kick-off: Saturday 27 Nov 2021, 15:00 UTC • Data inputs: H2H history, form splits, prediction model signals, and market pricing
📊 Statistical Prediction
• Poisson result probabilities: Gillingham 20% | Draw 28% | Portsmouth 52% • Poisson goal markets: Over 2.5 34% | BTTS 38% | xG Gillingham 0.72 / Portsmouth 1.35 • Poisson strength factors: Gillingham attack 0.571 / def 1.202 | Portsmouth attack 0.850 / def 1.083 | league avg home 1.168 / away 1.324 • Poisson stance: Portsmouth (52%) — moderate lean
🧮 Prediction Model
0.72
Gillingham xG
Expected Goals
1.35
Portsmouth xG
38%
BTTS
61%
Over 1.5
34%
Over 2.5
16%
Over 3.5
Full score-by-score matrix & model internals in the "Full Poisson Detail" section below ↓
⚠️ This analysis is generated algorithmically from statistical data and is intended for informational purposes only. It does not constitute betting advice. Please gamble responsibly.
❓ Frequently Asked Questions
What time does Gillingham vs Portsmouth kick off?
Gillingham vs Portsmouth kicked off at 15:00 on Saturday 27 November 2021 at Priestfield Stadium.
What was the final score in Gillingham vs Portsmouth?
Gillingham 0 - 1 Portsmouth.
Where is Gillingham vs Portsmouth being played?
The match is being played at Priestfield Stadium.
What competition is Gillingham vs Portsmouth part of?
Gillingham vs Portsmouth is a Regular Season - 20 fixture in the League One (England).
Who is favourite to win Gillingham vs Portsmouth?
Our statistical model gives Gillingham a 20% chance of winning, Portsmouth a 52% chance, and a 28% chance of a draw — making Portsmouth the favourite.
Will both teams score in Gillingham vs Portsmouth?
Our model estimates a 38% probability that both Gillingham and Portsmouth will score (BTTS).
Will Gillingham vs Portsmouth have over 2.5 goals?
Our model puts the probability of over 2.5 goals in this match at 34%.
What is the head-to-head record between Gillingham and Portsmouth?
No recorded head-to-head meetings available in the dataset.
What form are Gillingham and Portsmouth in?
Gillingham (all comps): 2W-3D-5L in 10 | 0.90 PPG | GF 0.70 / GA 1.30 | L5 D-D-D-L-L. Portsmouth (all comps): 5W-2D-3L in 10 | 1.70 PPG | GF 1.60 / GA 1.40 | L5 W-D-W-W-W.
🧮 Model Insight
Behind the Numbers
The model rates Gillingham's attack at 0.57x the league average against Portsmouth's defence at 1.08x — combine the two and it projects 0.72 expected goals for the hosts. Flip it around — Portsmouth's attack (0.85x) against Gillingham's defence (1.20x) — and the away total comes out at 1.35.
These ratings are built from 19/19 games of current-season data — a full enough sample to trust.
Scoreline Breakdown
Of every possible scoreline, 0-1 carries the highest individual probability at 15.4% — still a long way from a near-certainty, which says something about how open this one is on paper. Close behind: 0-0 (14.2%), 1-1 (13.9%). Those top three scorelines alone account for 43% of the model's total probability mass — a relatively concentrated, predictable distribution for this fixture.
Most Likely Outcome
Portsmouth Win
20%
5.03
28%
3.53
52%
1.93
Top 3 Most Likely Scorelines
0 – 1
17.0%
Away win
Most likely
0 – 0
12.6%
Draw
1 – 1
12.3%
Draw
Expected Goals & Win Odds
0.72
Gillingham xG
Total xG
2.07
1.35
Portsmouth xG
5.03
20%
Home win
3.53
28%
Draw
1.93
52%
Away win
Goals Markets
61%
Over 1.5
1.64
39%
Under 1.5
2.56
34%
Over 2.5
2.94
66%
Under 2.5
1.52
16%
Over 3.5
6.25
84%
Under 3.5
1.19
6%
Over 4.5
16.67
94%
Under 4.5
1.06
Match Markets
Both Teams to Score
38%
BTTS Yes
2.62
62%
BTTS No
1.62
Clean Sheet
26%
3.87
49%
2.06
Win to Nil
5%
19.47
25%
3.97
Score Probability Matrix (%)
| H \ A | 0 | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|---|
| 0 | 12.6 | 17.0 | 11.5 | 5.2 | 1.8 | 0.5 |
| 1 | 9.1 | 12.3 | 8.3 | 3.7 | 1.3 | 0.3 |
| 2 | 3.3 | 4.4 | 3.0 | 1.3 | 0.5 | 0.1 |
| 3 | 0.8 | 1.1 | 0.7 | 0.3 | 0.1 | – |
| 4 | 0.1 | 0.2 | 0.1 | 0.1 | – | – |
| 5 | – | – | – | – | – | – |
Green = home win · Grey = draw · Amber = away win · Outlined cell = most likely score
▶ Model Internals
❓ Frequently Asked Questions
What is the most likely scoreline for Gillingham vs Portsmouth?
Our Poisson model rates 0-1 as the single most likely exact scoreline, at 15.4%.
How many goals are Gillingham and Portsmouth expected to score?
The model projects 0.72 expected goals for Gillingham and 1.35 for Portsmouth, a combined total of 2.07.
How confident is the prediction model for Gillingham vs Portsmouth?
Not very — the model's leading outcome sits at just 52%, meaning this is rated as a genuinely open contest with no dominant favourite.
📈 Form Insight
The Form Picture
Gillingham come into this having played 19 games, going 3W 8D 8L for 0.89 points per game. Their last five reads D-D-D-L-L. The sample for Gillingham is still a mix of this season and last, given how young the current campaign is.
On the other side, Portsmouth sit at 1.53 PPG from 19 outings (8W 5D 6L), a run that reads W-D-W-W-W across their last five. The sample for Portsmouth is still a mix of this season and last, given how young the current campaign is.
Portsmouth carry the stronger recent form of the two, 0.64 PPG clear of Gillingham — worth weighing alongside whatever the head-to-head and market data say.
Home & Away Splits
Gillingham's home form reads 2W 3D 4L across 9 games on their own ground, a 1.00 PPG return.
Away from home, Portsmouth have taken 1.00 points per game from 9 outings (2W 3D 4L). That's a step down from their 1.53 PPG overall record — away form has been the weaker part of Portsmouth's season.
Scoring & Defensive Trends
Gillingham are averaging 0.84 goals scored and 1.37 conceded per game recently; Portsmouth are on 1.32 scored and 1.16 conceded.
Defensively: Portsmouth in 42% — worth knowing if you're weighing up clean-sheet or BTTS-No markets.
Last 19 Results — League One
Current season: same league only · Previous season: all leagues (covers promoted/relegated teams)
Gillingham
Blended
Portsmouth
Blended
❓ Frequently Asked Questions
What form are Gillingham and Portsmouth in coming into this match?
Gillingham have gone 3W 8D 8L in their last 19 games (0.89 PPG), while Portsmouth have gone 8W 5D 6L in their last 19 (1.53 PPG).
Which team has the better venue record — Gillingham at home or Portsmouth away?
Gillingham's home record (1.00 PPG) is the stronger of the two venue-specific splits — Gillingham at home: 1.00 PPG; Portsmouth away: 1.00 PPG.
Have Gillingham or Portsmouth been keeping clean sheets recently?
Gillingham have kept a clean sheet in 16% of their recent games, Portsmouth in 42%.
⚔️ Rivalry Insight
History of the Fixture
On record, these two have faced off 2 times since November 2021 — enough meetings to establish some real patterns. Every recorded meeting has come in League One. It has been a while since the last meeting — 23 April 2022, some 1 year back — so squads and form on both sides may look very different now.
Last 2 Meetings
0
Gillingham
0
Draws
2
Portsmouth
Recent Meetings
❓ Frequently Asked Questions
What is the head-to-head record between Gillingham and Portsmouth?
From 2 meetings on record, Gillingham have won 0, Portsmouth have won 2, and 0 have been drawn.
When did Gillingham and Portsmouth last play each other?
They last met on 23 April 2022, when Portsmouth 3-1 Gillingham.
Who has won more matches between Gillingham and Portsmouth?
Portsmouth have the better head-to-head record, with 2 wins from 2 meetings.
📈 Trading Insight
How These Sides Start
Gillingham are typically involved in an early goal — the half-time board shows at least one in 67% of their matches. They've also shown some fight from behind, salvaging a draw or win after trailing at half-time in 11% of those situations.
Portsmouth see a goal before the break in 56% of their matches. They've gone in front at half-time 33% of the time, though they've let that lead slip 22% of the time they've held it — worth watching if they're only ahead by one.
Goals & Clean Sheets
BTTS sits in mixed territory for this pairing — Gillingham 56%, Portsmouth 44% — no strong lean either way from the trading data alone.
Over 2.5 has been close to a coin-flip for both sides — 33% (Gillingham) and 56% (Portsmouth).
On the defensive side: Portsmouth in 33%; Gillingham have failed to score in 33% of games; Portsmouth in 33%.
Current season: same league only. Previous season: all leagues (covers promoted/relegated teams). All = any venue | Venue = Gillingham home games / Portsmouth away games. HT metrics require half-time score data — shown as — where unavailable.
❓ Frequently Asked Questions
Do both teams usually score when Gillingham play Portsmouth?
Not especially — both teams scoring has occurred in only 56% of Gillingham's recent matches and 44% of Portsmouth's, a rate that leans toward BTTS No.
Is Gillingham vs Portsmouth usually a high-scoring fixture?
Not particularly — Over 2.5 goals has come in for only 33% of Gillingham's recent games and 56% of Portsmouth's, pointing to a tighter contest.
Do Gillingham and Portsmouth tend to score early?
Gillingham have had a goal before half-time in 67% of their recent matches, Portsmouth in 56% — a useful reference point for first-half goal markets.
Prediction vindicated as Portsmouth edge out Gillingham 0-1.
📝 Match Report
How It Unfolded
Portsmouth beat Gillingham 0-1 at Priestfield Stadium, Regular Season - 20, in the League One. The remainder of the report sets that outcome against the pre-match model, the markets and the teams' data profiles.
The Model vs The Result
The Poisson model went into this projecting Gillingham 0.72 xG and Portsmouth 1.35 xG, a combined 2.07. The scoreboard read 0-1 for 1 actual goal. Both sides finished within a goal of their individual projections, so the scoreline sat close to the model's expected shape. Those figures were built on strength ratings of Gillingham attack 0.57 / defence 1.20 against Portsmouth attack 0.85 / defence 1.08, drawn from 19/19 games (CurrentSeason).
On the result, the model split it Gillingham 20% | Draw 28% | Portsmouth 52%, with Portsmouth to win its most likely call at 52%. The result followed the model's preferred path, landing its top-rated outcome.
Goals & Markets
The model rated Over 2.5 goals at 34%. The game delivered 1, so it stayed under — in line with the projection. Over 1.5 had been 61% and missed. On both teams to score, the model sat at 38% and the match did not — another call in the model's favour. Historically the two sides average 39% Over 2.5 across their same-competition games (Gillingham 26%, Portsmouth 53%), a base rate that agreed with today's under. Their combined BTTS history runs at 50%, which did not match the one-sided outcome.
Trading Patterns vs Reality
Gillingham's trading profile (19 games, 9 home) set some clear expectations: BTTS lands in 58% of their matches — today it did not; they fail to score in 32% of games, a blank that repeated today.
Portsmouth's trading profile (19 games, 9 away) set some clear expectations: BTTS lands in 42% of their matches — today it did not; they keep a clean sheet 42% of the time, and duly kept one.
Form vs Result
On form, Portsmouth arrived the stronger side — 1.53 PPG against 0.89. Form held, and they took the win. Portsmouth (home/away splits) conceded 0 against a 1.33 average — tighter than their form line.
Verdict
Grading the result against the stored data, 4 of 4 pre-match signals came in: result (hit), Over 2.5 (hit), BTTS (hit), form (hit). A strong night for the model: the result sat comfortably inside what the pre-match data projected.
💡 Key Insights
⚠️ This match report is generated algorithmically from the final score, our prediction model, and each team's historical form and trading data. Analysis is for informational purposes only.