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Swansea vs Portsmouth — Championship 2018

Swansea
Swansea
FT
2 – 2
HT: 1 – 2
Portsmouth
Portsmouth
11/30/2024ChampionshipChampionship · Round 18Swansea.com Stadium

Match Prediction

Statistical Prediction

Based on xG from last 24+ matches

Swansea43%
×Draw27%
Portsmouth30%
✓ Correct in 50 of 100 matches — 6 more than always backing the home side
Model
49.7%
Always home
44.3%

The model picks a winner (home or away) for each finished match using only pre-kickoff data, then checks it against the real result: 49.7% correct across 106,786 matches, vs 44.3% for always backing the home side.

Home picks 50.7% correct · Away picks 47.3% correct

Football matches only. Past performance is not indicative of future results.

Expected goals in this match

What is xG?

Every shot is scored 0–1 by how likely it is to be a goal from that spot — a chance in the middle of the box ≈ 0.4, a long shot from a tight angle ≈ 0.03, a penalty ≈ 0.76. Add them up over a match and that is the xG.

The scoreline can lie: you can win 1-0 on a fluke while creating half the chances. xG shows who was really closer to scoring — and over a season it predicts results better than goals alone.

Swansea
1.34
Portsmouth
1.07

Swansea creates 25% more chances

Season form · 24 home / 38 away

creates per match

Swansea
1.18
Portsmouth
0.93

allows per match

Swansea
1.22
Portsmouth
1.50

finishing

Swansea+0.03on par
Portsmouth+0.15scores more

Total goals

57%Under
  • Under57
  • Over43

Fewer than 3 goals likely

Both teams score

52%No
  • No52
  • Yes48

Close call

Score probability

Probability of each scoreline, %

Swansea ↓

Portsmouth →
0
1
2
3
4
0
0–09%
0–110%
0–25%
0–32%
0–40%
1
1–012%
1–113%
1–27%
1–32%
1–41%
2
2–08%
2–19%
2–25%
2–32%
2–40%
3
3–04%
3–14%
3–22%
3–31%
3–40%
4
4–01%
4–11%
4–21%
4–30%
4–40%

Most likely 1–1 (13%) · grid covers 98% of scorelines

More markets

Total goals

OverUnder0.5
91%9%1.5
69%31%2.5
43%57%3.5
22%78%4.5
10%90%

Double chance

Swansea or draw
70%
Swansea or Portsmouth
73%
Draw or Portsmouth
57%

Winning margin

Swansea wins by 2+
20%
Portsmouth wins by 2+
11%

Team goals

Swansea 1+ goals
74%
Swansea 2+ goals
39%
Swansea 3+ goals
15%
Portsmouth 1+ goals
66%
Portsmouth 2+ goals
29%
Portsmouth 3+ goals
9%

Draw no bet

Swansea (draw refunded)
59%
Portsmouth (draw refunded)
41%

Combos

Both score & 3+ goals
36%
Both score & under 3
13%

Model probabilities, not odds. For information only.

How is this calculated?

Every number below comes from this match — nothing is made up.

1

Recent form of each side

Swansea at home — creates 1.18, concedes 1.22 · 24 matches

Portsmouth away — creates 0.93, concedes 1.50 · 38 matches

⚑ Home and away form are counted separately — the home-field edge is already baked into these numbers.

2

Expected goals for this match

Swansea attack 1.18 + Portsmouth defence 1.50 → ÷2 → 1.34

Portsmouth attack 0.93 + Swansea defence 1.22 → ÷2 → 1.07

Each side's attack is blended with the other's defence, then averaged.

3

Chance of every scoreline

From those two numbers a Poisson distribution gives the probability of each exact score — the grid shown above.

4

The answer to "why 43%?"

Swansea scores more
43%
level
27%
Portsmouth scores more
30%

Swansea at 43% is simply the biggest of the three — that is the pick.

What the model can't see

It reads only the stats of recent matches. It knows nothing about:

  • injuries & suspensions
  • the matchday lineup
  • motivation — cup, relegation, a title race
  • weather & pitch condition
  • in-game coaching decisions

So 43% does not mean "Swansea will win" — it means "on the available stats, this is the most likely result."

Statistical model based on expected goals (xG). For informational purposes only.

Probable lineups not yet announced

Starting lineups are usually confirmed ~1 hour before kickoff

Match Recap: Swansea vs Portsmouth

Swansea and Portsmouth drew 2-2 in Championship on November 30, 2024.

The match was played at Swansea.com Stadium in Swansea.