San Diego Wave W vs Portland Thorns W — NWSL Women - Challenge Cup 2020
Match Prediction
Statistical Prediction
Based on goals from last 6+ matches
San Diego Wave W34%
Portland Thorns W34%✓ Correct in 50 of 100 matches — 5 more than always backing the home side
The model picks a winner (home or away) for each finished match using only pre-kickoff data, then checks it against the real result: 50.3% correct across 577,253 matches, vs 44.6% for always backing the home side.
Home picks 50.6% correct · Away picks 49.3% 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.
Both teams create about equally
Season form · 6 home / 12 away
creates per match
allows per match
finishing
Total goals
- Under70
- Over30
Fewer than 3 goals likely
Both teams score
- No62
- Yes38
One side may not score
Score probability
Probability of each scoreline, %
San Diego Wave W ↓
Most likely 0–0 (15%) · grid covers 99% of scorelines
More markets
Total goals
Double chance
Winning margin
Team goals
Draw no bet
Combos
Model probabilities, not odds. For information only.
How is this calculated?
Every number below comes from this match — nothing is made up.
Recent form of each side
San Diego Wave W at home — creates 1.17, concedes 1.33 · 6 matches
Portland Thorns W away — creates 0.58, concedes 0.75 · 12 matches
⚑ Home and away form are counted separately — the home-field edge is already baked into these numbers.
Expected goals for this match
San Diego Wave W attack 1.17 + Portland Thorns W defence 0.75 → ÷2 → 0.96
Portland Thorns W attack 0.58 + San Diego Wave W defence 1.33 → ÷2 → 0.96
Each side's attack is blended with the other's defence, then averaged.
Chance of every scoreline
From those two numbers a Poisson distribution gives the probability of each exact score — the grid shown above.
The answer to "why 34%?"
San Diego Wave W at 34% 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 34% does not mean "San Diego Wave W 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.
Match Events
Head to Head
San Diego Wave W host Portland Thorns W on Thursday, 20 April 2023 at 02:00. The match is part of the NWSL Women - Challenge Cup 2020/2021 season.
NWSL Women - Challenge Cup: San Diego Wave W 1–0 Portland Thorns W
San Diego Wave W beat Portland Thorns W 1-0 in NWSL Women - Challenge Cup on April 20, 2023.
Goals: M. Nally (65' o.g.).
The match was played at Snapdragon Stadium in San Diego, California.