luckadjusted
NHL Week 1 · 2026-27

2025-26 regular season · November 21, 2025 · OT

No betting line for this game, so there is no before-puck-drop or fresh-game number.

Bruins at Kings, Nov 21, 2025: who deserved to win?

The Bruins beat the Kings 2–1, but the replays lean toward the Kings: they take 6 of 10 with the same day's form. Luck ran their way: overtime alone was worth 51 points of win probability to the Bruins.

The game turned on a luck play (OT): the Bruins won in overtime, worth 51 points of win probability to the Bruins.

Final (OT)

Boston Bruins 2
Los Angeles Kings 1

November 21, 2025 · Crypto.com Arena

Luck index +62 Bruins very lucky · −62 Kings

Each team’s own shots from this game, resampled into new games 4,000 times, each a goal at its chance, with the power plays the penalties gave and the pulled goalie at the end: with the way both teams actually played, how often does this performance win? How the replay works

Ten replays. Bruins win 4, Kings win 6.

  1. 1 BOS 4 LAK 1
  2. 2 BOS 3 LAK 1
  3. 3 BOS 3 LAK 2
  4. 4 BOS 3 LAK 2
  5. 5 BOS 1 LAK 2
  6. 6 BOS 1 LAK 2
  7. 7 BOS 2 LAK 4
  8. 8 BOS 1 LAK 4
  9. 9 BOS 0 LAK 3
  10. 10 BOS 3 LAK 7

Three other ways to ask

Each answers a different question, so none of them replaces the replay above.

No closing line for this game.

Needs the closing line, which this game has not got.

Every shot redrawn at its chance, overtime and the shootout replayed as near coin flips; the shots themselves and every call fixed. The narrowest view of luck.

How 4,000 replays ended

Bruins win 38% of them, Kings 62%. The line is what actually happened: Bruins by 1.

Show as a table
Final margin in the replaysShare of replays
Bruins by 3+10.5%
Bruins by 27.4%
Bruins by 119.8%
Kings by 122.8%
Kings by 211.5%
Kings by 3+27.9%

Where the luck was

What the luck was worth

Every lucky and unlucky play, weighted by the moment it happened: its swing in win probability, added up by kind. A post hit in a blowout counts for nothing; the same post with a minute left in a tie game can be most of a win.

Swings add up across a game, so in one that went back and forth they can pass 100%. On the scoreboard the same luck was worth +1.7 goals to the Bruins: the final margin was Bruins by 1, without the luck Kings by 0.7. Luck shares are the fitted ones (how much of each kind is luck).
ShootingUnblocked attemptsGoalsExpected goalsAbove expected
Bruins4412.02−1.02
Kings5112.88−1.88

Regulation with both goalies in. Expected goals: our model of each shot’s chance from where and how it was taken (distance, angle, shot type, rebound, rush, strength), adjusted for the shooter’s and the goalie’s records. A team above expected finished better or met a weaker night in goal; 75% of the gap counts as luck (why that share).

Calls

Every penalty that put a team on the power play, and every goal taken off the board on review, with what it did to the helped team’s chance of winning at that moment. Calls don’t count toward luck by default: who draws penalties repeats from game to game like a skill (how calls are valued). Switch them on below.

WhenCallWin probability for
P1 13:35 Interference on the Kings (Corey Perry): 2 minutes on the power play +4% BOS
P1 10:31 Holding on the Bruins (Sean Kuraly): 2 minutes on the power play +4% LAK
P1 9:41 High sticking on the Bruins (Andrew Peeke): 2 minutes on the power play +4% LAK
P2 13:08 Tripping on the Bruins (Sean Kuraly): 2 minutes on the power play +5% LAK
P3 16:01 Tripping on the Bruins (Alex Steeves): 2 minutes on the power play +6% LAK
P3 10:14 Tripping on the Bruins (Jonathan Aspirot): 2 minutes on the power play +5% LAK
P3 7:53 Tripping on the Kings (Kevin Fiala): 2 minutes on the power play +6% BOS

When it happened

Kings’ chance of winning

As low as 0% and as high as 54%. Numbers mark the biggest luck moments, listed below.

Our in-game win probability: the score and the time left, starting from the betting line (or the home edge alone when there is none), with goals at the league’s rates for the score. Overtime is drawn at a fixed width. Shaded above the middle while the Kings were ahead in it, below while the Bruins were.
#WhenWhat happenedWin probability forNext drive
1 P1 8:29 Corey Perry missed the net with a wrist shot from 3 feetShooting · 41% chance +7% BOS –
2 P3 18:05 Anze Kopitar’s snap shot from 9 feet was savedShooting · 25% chance +7% BOS –
3 P3 16:01 Tripping on the Bruins (Alex Steeves): 2 minutes on the power playPenalty calls +6% LAK –
4 P3 11:59 Morgan Geekie scored on a slap shot from 46 feetShooting · 5% chance +29% BOS –
5 P3 10:14 Tripping on the Bruins (Jonathan Aspirot): 2 minutes on the power playPenalty calls +5% LAK –
6 P3 7:53 Tripping on the Kings (Kevin Fiala): 2 minutes on the power playPenalty calls +6% BOS –
7 P3 6:57 Joel Armia scored on a backhand shot from 11 feetShooting · 11% chance +32% LAK –
8 OT The game turned hereThe Bruins won in overtimeOvertime · overtime is close to a coin flip +51% BOS –

Adjust the assumptions

Think finishing is more skill than we do, or that the calls were luck? Change it and the coin-flip replay reruns in your browser.

Only coin-flips re-rolled

Bruins 34% · Kings 66%

Final margin
Bruins by 1
Luck in goals
1.7 for the Bruins
Luck-adjusted margin
Kings by 0.7
Replay with same day's form
Bruins 38% · Kings 62% 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 game and in every replay: a goal becomes a save, a post goes in, a penalty goes the other way.

About these numbers

Play-by-play from the NHL via fastRhockey; expected goals, in-game win probability and the replays are our own models, fitted on every game since 2018-19 (methodology and validation). Blocked shots aren’t replayed (their location is the block’s, not the shot’s). No betting line for this game, so there is no before-puck-drop or fresh-game number.

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