luckadjusted
Premier League Matchday 5 · 2026-27

Matchday 7 · Premier League 2015-16 · September 26, 2015

Southampton 3–1 Swansea: who deserved to win?

Southampton beat Swansea 3–1, and the replays lean Southampton’s way: 6 wins in 10, 2 for Swansea, 2 end level. The chances were close to even (1.4 expected goals to 1.3). An own goal helped Southampton.

Full time

TeamGoalsxG
Southampton 3 1.41
Swansea City 1 1.32

September 26, 2015 · St. Mary's Stadium · Referee: Roger East

Luck index +32 Southampton lucky · −32 Swansea

Each team’s own shots from this match, resampled into new matches 4,000 times, each a goal at its expected-goals chance: with the way both teams actually played, how often does this performance win? How the replay works

Ten replays. Southampton win 6, 2 end level, Swansea win 2.

  1. 1 SOU 2 SWA 1
  2. 2 SOU 4 SWA 3
  3. 3 SOU 4 SWA 2
  4. 4 SOU 2 SWA 0
  5. 5 SOU 3 SWA 0
  6. 6 SOU 5 SWA 1
  7. 7 SOU 1 SWA 1
  8. 8 SOU 1 SWA 1
  9. 9 SOU 1 SWA 3
  10. 10 SOU 1 SWA 2

The narrowest view of luck

The same match, with only the coin flips re-rolled: every shot kept where and how it was taken, its outcome redrawn at its chance (75% of finishing counts as luck), own goals at the league’s rate.

There is no betting line for this match, and no forecast from before kickoff: matches of past seasons are replayed, not forecast.

How 4,000 replays of the 90 minutes ended

Southampton win 56%, 23% end level, Swansea win 21%. The line is what actually happened: Southampton by 2.

Show as a table
After 90 minutes in the replaysShare of replays
Southampton by 3+14.8%
Southampton by 216.5%
Southampton by 124.7%
Draw23.3%
Swansea by 113.4%
Swansea by 25.3%
Swansea by 3+1.9%

Where the luck was

FinishingShotsGoalsExpected goalsAbove expected
Southampton1621.41+0.59
Swansea11 (1 pen)11.32−0.32

Own goals aren’t shots, so they’re counted on their own. A side above expected finished better than its chances, or met a goalkeeper on a bad day; 75% of the gap counts as luck (why that share).

The big chances, and every goal

MinuteChancexG
10'Virgil van Dijk scored from a shot0.28
60'Sadio Mané scored from a shot0.10
82'Gylfi Þór Sigurðsson scored from a penalty0.78

When it happened

Southampton’s chance of winning

Numbers mark the biggest luck moments, listed below.

Our in-game win probability: the score and the minutes left, with goals for the rest of the match at the league’s rates. A draw counts half, as in the replays. Shaded above the middle while Southampton was ahead in it, below while Swansea was.
#WhenWhat happenedWin probability for
1 5' Jonjo Shelvey didn’t score from a shotFinishing · 5% chance +1% SOU
2 5' Sung-Yeung Ki didn’t score from a shotFinishing · 16% chance +4% SOU
3 7' Sadio Mané didn’t score from a shotFinishing · 11% chance +3% SWA
4 10' Virgil van Dijk scored from a shotFinishing · 28% chance +16% SOU
5 25' Gylfi Þór Sigurðsson didn’t score from a free kickFinishing · 7% chance +2% SOU
6 46' James Ward-Prowse didn’t score from a shotFinishing · 24% chance +3% SWA
7 53' Own goal by nan, for SouthamptonOwn goals · own goals are rare: luck in full +11% SOU
8 60' Sadio Mané scored from a shotFinishing · 10% chance +2% SOU

Adjust the assumptions

Think finishing is more skill than we do? Change how much of it counts as luck and the coin-flip replay of the 90 minutes reruns in your browser.

Only coin-flips re-rolled

Southampton 38% · draw 28% · Swansea 34%

Final margin
Southampton by 2
Luck in goals
1.6 for Southampton
Luck-adjusted margin
Southampton by 0.4
Replay with same day's form
Southampton 56% · draw 23% · Swansea 21% unchanged: why
How much of each is luck?

0% treats it as skill, 100% as pure luck. The tick is our fit.

What counts
Flip a play

Force the other outcome, in this match and in every replay: a goal becomes a save, a chance goes in.

About these numbers

Expected goals per shot from StatsBomb’s open data; the replays, the in-game win probability and the luck shares are our own models, fitted and tested on every shot of four full league seasons and four tournaments, these matches included (methodology and validation). Southampton win 68% of replays (a draw counted as half).

All matchday 7 matches, 2015-16 · Southampton · Swansea

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