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Perth Glory vs Brisbane Roar — A-League 2018

Perth Glory
Perth Glory
FT
2 – 0
HT: 1 – 0
Brisbane Roar
Brisbane Roar
2/20/2022A-LeagueA-League · Round 15University of Tasmania Stadium

Match Prediction

Statistical Prediction

Based on goals from last 105+ matches

Perth Glory45%
×Draw24%
Brisbane Roar31%
✓ 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.

Perth Glory
1.66
Brisbane Roar
1.35

Perth Glory creates 23% more chances

Season form · 106 home / 105 away

creates per match

Perth Glory
1.60
Brisbane Roar
1.15

allows per match

Perth Glory
1.55
Brisbane Roar
1.72

finishing

Perth Glory+0.00on par
Brisbane Roar+0.00on par

Total goals

58%Over
  • Over58
  • Under42

3+ goals likely

Both teams score

60%Yes
  • Yes60
  • No40

Both teams likely to score

Score probability

Probability of each scoreline, %

Perth Glory ↓

Brisbane Roar →
0
1
2
3
4
0
0–05%
0–17%
0–25%
0–32%
0–41%
1
1–08%
1–111%
1–27%
1–33%
1–41%
2
2–07%
2–19%
2–26%
2–33%
2–41%
3
3–04%
3–15%
3–23%
3–32%
3–41%
4
4–02%
4–12%
4–21%
4–31%
4–40%

Most likely 1–1 (11%) · grid covers 96% of scorelines

More markets

Total goals

OverUnder0.5
95%5%1.5
80%20%2.5
58%42%3.5
35%65%4.5
18%82%

Double chance

Perth Glory or draw
69%
Perth Glory or Brisbane Roar
76%
Draw or Brisbane Roar
55%

Winning margin

Perth Glory wins by 2+
23%
Brisbane Roar wins by 2+
14%

Team goals

Perth Glory 1+ goals
81%
Perth Glory 2+ goals
49%
Perth Glory 3+ goals
23%
Brisbane Roar 1+ goals
74%
Brisbane Roar 2+ goals
39%
Brisbane Roar 3+ goals
15%

Draw no bet

Perth Glory (draw refunded)
59%
Brisbane Roar (draw refunded)
41%

Combos

Both score & 3+ goals
49%
Both score & under 3
11%

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

Perth Glory at home — creates 1.60, concedes 1.55 · 106 matches

Brisbane Roar away — creates 1.15, concedes 1.72 · 105 matches

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

2

Expected goals for this match

Perth Glory attack 1.60 + Brisbane Roar defence 1.72 → ÷2 → 1.66

Brisbane Roar attack 1.15 + Perth Glory defence 1.55 → ÷2 → 1.35

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 45%?"

Perth Glory scores more
45%
level
24%
Brisbane Roar scores more
31%

Perth Glory at 45% 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 45% does not mean "Perth Glory 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

A-League: Perth Glory 2–0 Brisbane Roar

Perth Glory beat Brisbane Roar 2-0 in A-League on February 20, 2022.

The match was played at University of Tasmania Stadium in Launceston.