Motion-blurred skater in a gold and black sweater
Breakdown · BOS at EDM

J. Swayman stands tall as the Bruins edge the Oilers

The verdict · stolen

The Bruins stole one. They lost the expected-goals battle 2.63–6.06 and won anyway.

BOS 6 · EDM 2
◆ By the ModelJul 11, 10:39 PMxG: xgboost-0.758Edited for clarityDrafted from NHL play-by-play by Backcheck's model, worded for clarity by an AI editor that may not change a number. Nobody at Backcheck was at the rink. How this works

Boston's 6–2 victory masks a dominating performance by Edmonton. The Oilers controlled 70% of expected goals (6.06–2.63), generating 36 shot attempts to the Bruins' 29. The scoreboard and the underlying play told radically different stories.

J. Swayman made the difference. The Bruins' goalie stopped 34 of 36 shots (0.944 SV%) and saved 4.06 goals above expected. Meanwhile, C. Ingram struggled: the Oilers' starter allowed 6 goals on 29 shots and finished 3.37 goals below expectation.

Edmonton's control was methodical and fruitless. The Oilers generated 14 high-danger chances and converted zero. They shot with superior efficiency (0.101 expected goals per shot versus Boston's 0.048), yet scored just 2 goals. On the rush, they managed 2 goals on 29 chances; they created 8 rebound opportunities and finished 0-for-8.

Boston capitalized on limited opportunity. The Bruins generated only 2 high-danger chances but scored 3 goals from low-danger spots. They converted 4 rush chances on 29 attempts and made 2 of 3 rebound opportunities count.

The turning point came when David Pastrnak's slap shot from a sharp angle at 14:34 broke what had been a competitive game. He finished with 2 goals and 1 assist in 20:03. H. Lindholm contributed 1 goal and 1 assist in 21:20. F. Minten added 2 assists in 17:51.

Edmonton's night encapsulates a hockey truth: elite underlying metrics don't guarantee victory. The Oilers were superior in shot volume, shot quality, and high-danger chance creation—70% of expected goals—yet left with a 6–2 loss. Swayman's excellence and Ingram's collapse flipped every advantage. In a larger sample, performances this disparate between underlying play and the scoreboard don't repeat.

The breakdown in twelve frames

Swipe it

Every number is from this page
Final · Dec 31
BOS
6
EDM
2

J. Swayman stands tall as the Bruins edge the Oilers

Chances 2.6 – 6.1Did they deserve it? →
Did they deserve it?

The Oilers deserved better.

Expected goals · chance value
BOS
2.63
EDM
6.06
30% of the chances70%

The board read BOS 6, EDM 2. The chances read BOS 2.6, EDM 6.1.

Our xG model · NHL play-by-play · all situations
Luck check
BOS
+3.4
goals above expected
BOS2.63 expected · 6 scored
Expected
Scored
EDM6.06 expected · 2 scored
Expected
Scored

The Bruins scored 3.4 more than their chances were worth. That does not repeat.

PDO = sh% + sv% · drifts to 1.000 over a season
Every goal, in order
  1. P1 07:28BOSD. PastrnakPP1–0
  2. P1 18:13BOSC. Mittelstadt2–0
  3. P1 19:19EDMZ. Hyman2–1
  4. P2 07:05BOSH. Lindholm3–1
  5. P2 18:19BOSJ. Aspirot4–1
  6. P3 04:20BOSE. Lindholm5–1
  7. P3 07:22EDMJ. Roslovic5–2
+1 more on the full breakdown
NHL play-by-play · chance value from our xG model
Where the shots came from
BOS
41 shots
6
Final
87 shots
EDM
46 shots
2
BOS attackEDM attack
BOS EDM Goal
41
shots · 6 in
46
shots · 2 in
Every unblocked shot · press play to replay it
Chances by danger
BOSEDM
1 / 2
0.43 xG
High danger
0 / 14
3.52 xG
2 / 13
1.49 xG
Medium
0 / 16
2.12 xG
3 / 40
0.70 xG
Low
2 / 30
0.41 xG

The Oilers went 0 for 14 from the slot.

Danger tiers by our xG model · high ≥ 20% chance
In the net
A+
J. Swayman
+4.1
BOS · 34/36
F
C. Ingram
−3.4
EDM · 23/29
The numbers, checked
BACKCHECK

J. Swayman stands tall as the Bruins edge the Oilers

A model, not a newsroom. Every number on these frames comes from the NHL's play-by-play and our own models. Nothing was watched, guessed or heard from anyone.

Read the full breakdown
backcheckreport.com
01 / 08 · Final
Every goal, in order

How it happened

NHL play-by-play
1stshots 12–15
  1. 07:28BOSD. Pastrnakpower play(E. Lindholm, C. McAvoy)1–0
  2. 18:13BOSC. Mittelstadt(V. Arvidsson, H. Lindholm)2–0
  3. 19:19EDMZ. Hyman(C. McDavid, L. Draisaitl)2–1
2ndshots 9–10
  1. 07:05BOSH. Lindholm(F. Minten, V. Arvidsson)3–1
  2. 18:19BOSJ. Aspirot(D. Pastrnak)4–1
3rdshots 8–11
  1. 04:20BOSE. Lindholm(M. Geekie, A. Steeves)5–1
  2. 07:22EDMJ. Roslovic(D. Nurse, C. Ingram)5–2
  3. 14:34BOSD. Pastrnak(F. Minten, M. Khusnutdinov)6–2

score reads BOS–EDM

Source · NHL play-by-play (api-web.nhle.com)
Process vs result

The numbers

XGBoost xG · NHL play-by-play
2.63
BOS chances
Goals their shots were worth
+3.4
Finishing
Goals above what those chances were worth
1.076
BOS puck luck
Above 1.000 — the bounces went their way
47.8%
Shot attempts
Under half — they were outshot
Split by club

Who controlled the game

2.63Expected goals6.06
EDM 70% of the chance quality
29Shots on goal36
2High-danger chances14
55All attempts (Corsi)60
Adjusted for score: BOS 42% · EDM 58%
Faceoffs · EDM won60%off57%neu35%def
Source · NHL play-by-play · XGBoost xG
How the game was won

The danger ladder

shotsgoalsexpected
High dangerslot & crease
BOS1 / 2 · 0.43 xG
EDM0 / 14 · 3.52 xG
Medium dangermid-range
BOS2 / 13 · 1.49 xG
EDM0 / 16 · 2.12 xG
Low dangerperimeter & point
BOS3 / 40 · 0.70 xG
EDM2 / 30 · 0.41 xG

EDM went 0-for-14 from high danger on 3.52 expected goals — 3.5 left on the table.

Source · Backcheck xG model · NHL play-by-play
The luck layer

Finishing vs expected

expectedactual
BOS
6 G · 2.63 xG · +3.4
EDM
2 G · 6.06 xG · -4.1
01234567

BOS finished +3.4 against expected, EDM -4.1.

Source · Backcheck xG model
Shot types · rush and rebound chancesopen +
What they shot — and what went in

Shot diet

goalsshots
BOS
WRIST4/21
SNAP1/10
SLAP1/7
BACKHAND0/2
TIP IN0/1
BAT0/0
POKE0/0
DEFLECTED0/0
OTHER0/14
EDM
WRIST2/27
SNAP0/9
SLAP0/0
BACKHAND0/3
TIP IN0/4
BAT0/1
POKE0/1
DEFLECTED0/1
OTHER0/14
BOS
EDM
Off the rush
4 G on 29
1.90 xG
2 G on 29
3.91 xG
Off rebounds
2 G on 3
0.51 xG
0 G on 8
1.68 xG

Wrist shots carried the volume: BOS went 4-for-21, EDM 2-for-27. BOS scored 4 of theirs off the rush.

Source · Backcheck xG model · NHL shot types
New to these numbers?

Two things happened in this game: who created the better chances, and who put the puck in the net. They are not the same thing, and this page separates them on purpose.

The one to watch is expected goals— the best single read on who deserved to win. When it disagrees with the scoreboard, that disagreement is usually the story. Nothing here is a projection; every figure is computed from this game's play-by-play. Full glossary →

xG
Expected goals. Every shot scored by how often that exact look goes in. 2.5 xG means the chances were worth about two and a half goals.
HD
High-danger chances — shots from the slot and the crease, where shots actually become goals.
Corsi
Every shot attempt, including the ones that missed or got blocked. A rough read on who had the puck.
Adj.
Score-adjusted. Teams that trail shoot more and teams that lead sit back, so this corrects the attempt count for the scoreboard.
GSAx
Goals saved above expected. A positive number means the goalie stopped more than an average goalie would have on those shots.
PDO
Shooting % plus save % — a luck gauge. It sits near 1.000 over a season, so a game far from it usually means the bounces decided it.
Shot by shot

In the net

Graded on goals saved above expected
J. Swayman
BOS · 34/36 · .944
+4.1
saved above expected
A+
the night
By dangerG/attxGsaved
High danger0/143.5+3.5
Medium0/162.1+2.1
Low2/300.4-1.6

A+ ≥ +2.5 saved above expected · A ≥ +1.5 · B+ ≥ +0.75 · B ≥ +0.25 · C ≥ −0.25 · D ≥ −0.75 · F below −1.5

C. Ingram
EDM · 23/29 · .793
-3.4
saved above expected
F
the night
By dangerG/attxGsaved
High danger1/20.4-0.6
Medium2/131.5-0.5
Low3/400.7-2.3

A+ ≥ +2.5 saved above expected · A ≥ +1.5 · B+ ≥ +0.75 · B ≥ +0.25 · C ≥ −0.25 · D ≥ −0.75 · F below −1.5

87 shots · press play to watch the game back

Where the shots came from

NHL play-by-play coordinates
BOS
41 shots
6
Final
87 shots
EDM
46 shots
2
BOS attackEDM attack
BOS EDM Goal

Each club shoots toward its own end — BOS left, EDM right — the way you would watch it. A dot's size is how dangerous the look was, from distance and angle; it is a proxy for shot quality, not the xG model the article is written from. Hover a dot for the shooter and the clock.

Ranked from the box score

Three stars

Points first
Three stars · computed, not voted
D. Pastrnak
#88 · R · BOS
2 G · 1 A · 6 SOG · 20:03 on ice · +1
H. Lindholm
#27 · D · BOS
1 G · 1 A · 5 SOG · 21:20 on ice · +2
F. Minten
#93 · C · BOS
0 G · 2 A · 1 SOG · 17:51 on ice · +3
Ranked from the box score — points first · Backcheck
What the model said beforehand

Before the game

Written Wed, Dec 31
Open the pre-game read
Written from the numbers

The read

Edited for clarity
◆ By the ModelJul 11, 10:37 PMEdited for clarityDrafted from NHL play-by-play by Backcheck's model, worded for clarity by an AI editor that may not change a number. Nobody at Backcheck was at the rink. How this works

The model projects a BOS 2.4 - 2.8 EDM game with the Oilers at 56% win probability. Edmonton has the superior underlying game and luck working against them—a combination that typically corrects.

The Oilers dominate the underlying play. At 5v5, Edmonton posts 52.0% xG to Boston's 47.0%, controlling shot quality and shot generation. This gap explains much of the model's edge. Boston's possession metrics are only marginally closer (49.0% Corsi% vs. 50.0%), a sign that the Oilers are winning the territorial battle decisively.

The catch is PDO—the small-sample stat that punishes and rewards teams by puck luck. Edmonton runs 0.982, cold by definition and primed for positive regression. Boston sits at 1.023, running hot and vulnerable to regression the other direction. This is the match's structural narrative: the team with the better process is underperforming its results, while the team with the worse process is overperforming. History suggests that gaps close.

Recent form reinforces the model's read. Edmonton is 7-3-0 in their last 10. Boston is underwater at -10 goal differential over the same stretch, the kind of trend that compounds when you're facing a team that actually generates advantages.

Goaltending adds a wrinkle: C. Pickard and J. Swayman are both working back-to-backs. Watch for a backup appearance or signs of fatigue in whoever starts. A tired starter amplifies an already difficult matchup for Boston.

Players to Watch

  • Viktor Arvidsson (BOS): 1.04 xG/60, 18G 24A, 2 HD goals, 13.0% shooting
  • Tanner Jeannot (BOS): 0.75 xG/60, 6G 14A, 2 HD goals, 8.3% shooting
  • Zach Hyman (EDM): 1.23 xG/60, 14G 13A, 1 HD goals, 13.0% shooting
  • Connor McDavid (EDM): 0.92 xG/60, 25G 33A, 5 HD goals, 13.7% shooting
What the model said beforehand

The model's lean

EDM 56%
56%
EDM
Model favorite
44%
56%
BOS50EDM

EDM by 12 points of win probability — a modest lean. Projected score BOS 2.4–2.8 EDM; 18% chance it's tied after 60.

Source · Backcheck Poisson projection · season scoring rates
Season rates · 5v5

Tale of the tape

NHL stats API · our xG
BOS← edge
edge →EDM
47.0%52.0%
49.0%50.0%
2.392.64
2.672.47
2.222.13
1.822.29
1.0230.982

EDM holds 4 of 6 process categories — and the luck row (1.023 vs 0.982) says BOS has been getting the bounces, which tends not to last.

Source · NHL stats API + our xG · 5v5
Form · Last 10
BOS
3-5-2
-10 GD · 1d rest
EDM
7-3-0
+10 GD · 1d rest
1.023
BOS PDO
Luck gauge · drifts to 1.000
0.982
EDM PDO
Luck gauge · drifts to 1.000
What decides it

Keys to the game

Where the edges live
  • The Oilers own the underlying play — 52.0% 5v5 xG vs 47.0%.
Regression watch
  • The Oilers' PDO is 0.982 — running cold, due for positive regression.
  • The Bruins' PDO is 1.023 — running hot, expect some regression.
Things to watch
  • The Oilers own the underlying play — 52.0% 5v5 xG vs 47.0%.
  • C. Pickard is on a back-to-back — watch for a backup start or a tired starter.
  • J. Swayman is on a back-to-back — watch for a backup start or a tired starter.
  • The Oilers are the hotter team by points pace (7-3-0 in their last 10).
  • The Bruins are underwater at -10 goal differential over their last 10.
  • The Oilers' PDO is 0.982 — running cold, due for positive regression.
Last game's lineup · confirmed at warm-up

Lineups

NHL box score
BOS
Expected in goal
J. Swayman
back-to-back.950 last start
Backup Jeremy Swayman · +28.8 GSAx this season
Back-to-back: the backup often gets this one. Treat the starter as unconfirmed.

No completed game on file for this club yet.

EDM
Expected in goal
C. Pickard
back-to-back.976 last start
Backup Connor Ingram · +1.7 GSAx this season
Back-to-back: the backup often gets this one. Treat the starter as unconfirmed.

No completed game on file for this club yet.

Lineups are the players who dressed in each club's last game, with their minutes; clubs confirm tonight's at warm-up. Every player this preview names was in that lineup.

Computed danger · scouting

Players to watch

NHL stats API · our xG
BOS
Viktor Arvidsson18G 24A
1.04 xG/60 · 2 HD · 13.0% sh
Tanner Jeannot6G 14A
0.75 xG/60 · 2 HD · 8.3% sh
EDM
Zach Hyman14G 13A
1.23 xG/60 · 1 HD · 13.0% sh
Connor McDavid25G 33A
0.92 xG/60 · 5 HD · 13.7% sh
Keep going

Where to next