Portsmouth 2–2 Plymouth: Result & Stats

Portsmouth

FT

2 – 2

HT: 1 – 0

Plymouth

9/21/2021

League One · Round 6Fratton Park

Match Prediction

Statistical Prediction

Based on goals from last 115+ matches

Portsmouth47%

×Draw25%

Plymouth28%

✓ 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.

PortsmouthExpected goals in this matchPlymouth

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.

1.61

1.19

Portsmouth

1.61

Plymouth

1.19

Portsmouth creates 35% more chances

Season form · 137 home / 115 away

1.72

creates per match

1.37

1.01

allows per match

1.50

creates per match

Portsmouth

1.72

Plymouth

1.37

allows per match

Portsmouth

1.01

Plymouth

1.50

+0.00on par

finishing

+0.00on par

finishing

Portsmouth+0.00on par

Plymouth+0.00on par

Total goals

Over53
Under47

3+ goals likely

Both teams score

Yes56
No44

Both teams likely to score

Score probability

Probability of each scoreline, %

Portsmouth ↓

Plymouth →

0

1

2

3

4

0

0–06%

0–17%

0–24%

0–32%

0–41%

1

1–010%

1–112%

1–27%

1–33%

1–41%

2

2–08%

2–19%

2–26%

2–32%

2–41%

3

3–04%

3–15%

3–23%

3–31%

3–40%

4

4–02%

4–12%

4–21%

4–30%

4–40%

Most likely 1–1 (12%) · grid covers 97% of scorelines

More markets

Total goals

OverUnder0.5

94%6%1.5

77%23%2.5

53%47%3.5

31%69%4.5

15%85%

Double chance

Portsmouth or draw

72%

Portsmouth or Plymouth

75%

Draw or Plymouth

53%

Winning margin

Portsmouth wins by 2+

24%

Plymouth wins by 2+

11%

Team goals

Portsmouth 1+ goals

80%

Portsmouth 2+ goals

48%

Portsmouth 3+ goals

22%

Plymouth 1+ goals

70%

Plymouth 2+ goals

33%

Plymouth 3+ goals

12%

Draw no bet

Portsmouth (draw refunded)

63%

Plymouth (draw refunded)

37%

Combos

Both score & 3+ goals

44%

Both score & under 3

12%

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

Portsmouth at home — creates 1.72, concedes 1.01 · 137 matches

Plymouth away — creates 1.37, concedes 1.50 · 115 matches

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

2

Expected goals for this match

Portsmouth attack 1.72 + Plymouth defence 1.50 → ÷2 → 1.61

Plymouth attack 1.37 + Portsmouth defence 1.01 → ÷2 → 1.19

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 47%?"

Portsmouth scores more

47%

level

25%

Plymouth scores more

28%

Portsmouth at 47% 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 47% does not mean "Portsmouth 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