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

J. Swayman stands tall as the Bruins edge the Jets

The verdict · stolen

The Bruins stole one. They lost the expected-goals battle 4.20–3.25 and won anyway.

WPG 1 · BOS 6
◆ By the ModelJul 12, 7:52 AMxG: 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 won 6–1 in a game where Winnipeg dominated the underlying metrics. The Jets controlled 56% of expected goals; the Bruins controlled the scoreboard.

This was pure finish. Boston shot at a 44% expected-goal rate but scored on high-danger chances at an unsustainable clip. Winnipeg shot 56% of the xG and scored on zero of seven high-danger looks. Boston converted three of six on identical opportunities. That shooting split in the slot turns what xG suggested should be close into a 6-1 blowout.

J. Swayman stole this game. He stopped 23 of 24 shots (0.958 SV%) and saved 3.2 goals above expected—the margin of victory on its own. The Jets had ample high-danger chances and buried none. The Bruins had fewer and converted half. Shot volume without execution is just noise.

Boston held 53% of shot attempts and trailed in expected goals. They scored four rush goals on 25 rush attempts—a ratio they will not sustain. What looked like dominance was finish and Swayman's excellence carrying them past a Jets team that was the better five-on-five side.

Winnipeg was the more dangerous team. It did not matter.

The breakdown in twelve frames

Swipe it

Every number is from this page
Final · Mar 19
WPG
1
BOS
6

J. Swayman stands tall as the Bruins edge the Jets

Chances 4.2 – 3.3Did they deserve it? →
Did they deserve it?

The Jets deserved better.

Expected goals · chance value
WPG
4.20
BOS
3.25
56% of the chances44%

The board read WPG 1, BOS 6. The chances read WPG 4.2, BOS 3.3.

Our xG model · NHL play-by-play · all situations
Luck check
BOS
+2.8
goals above expected
BOS3.25 expected · 6 scored
Expected
Scored
WPG4.20 expected · 1 scored
Expected
Scored

The Bruins scored 2.8 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 14:52BOSD. Pastrnak0–1
  2. P2 06:23BOSL. Reichel0–2
  3. P2 18:16BOSV. Arvidsson0–3
  4. P3 03:15BOSP. Zacha0–4
  5. P3 05:38WPGJ. ToewsPP1–4
  6. P3 15:52BOSF. Minten1–5
  7. P3 18:18BOSJ. Aspirot1–6
NHL play-by-play · chance value from our xG model
Where the shots came from
WPG
45 shots
1
Final
86 shots
BOS
41 shots
6
WPG attackBOS attack
WPG BOS Goal
45
shots · 1 in
41
shots · 6 in
Every unblocked shot · press play to replay it
Chances by danger
WPGBOS
0 / 7
1.47 xG
High danger
3 / 6
1.48 xG
1 / 23
2.44 xG
Medium
2 / 12
1.12 xG
0 / 27
0.29 xG
Low
1 / 32
0.65 xG

The Jets went 0 for 7 from the slot.

Danger tiers by our xG model · high ≥ 20% chance
In the net
A+
J. Swayman
+3.2
BOS · 23/24
F
C. Hellebuyck
−2.8
WPG · 21/27
The numbers, checked
BACKCHECK

J. Swayman stands tall as the Bruins edge the Jets

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 9–13
  1. 14:52BOSD. Pastrnak0–1
2ndshots 7–8
  1. 06:23BOSL. Reichel0–2
  2. 18:16BOSV. Arvidsson(C. Mittelstadt, P. Zacha)0–3
3rdshots 8–6
  1. 03:15BOSP. Zacha(C. Mittelstadt, V. Arvidsson)0–4
  2. 05:38WPGJ. Toewspower play(E. Salomonsson, B. Lambert)1–4
  3. 15:52BOSF. Minten(D. Pastrnak, A. Peeke)1–5
  4. 18:18BOSJ. Aspirot(M. Geekie, L. Reichel)1–6

score reads WPG–BOS

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

The numbers

XGBoost xG · NHL play-by-play
3.25
BOS chances
Goals their shots were worth
+2.8
Finishing
Goals above what those chances were worth
1.103
BOS puck luck
Above 1.000 — the bounces went their way
46.7%
Shot attempts
Under half — they were outshot
Split by club

Who controlled the game

4.20Expected goals3.25
WPG 56% of the chance quality
24Shots on goal27
7High-danger chances6
57All attempts (Corsi)50
Adjusted for score: WPG 58% · BOS 42%
Faceoffs · BOS won60%off56%neu65%def
Source · NHL play-by-play · XGBoost xG
How the game was won

The danger ladder

shotsgoalsexpected
High dangerslot & crease
WPG0 / 7 · 1.47 xG
BOS3 / 6 · 1.48 xG
Medium dangermid-range
WPG1 / 23 · 2.44 xG
BOS2 / 12 · 1.12 xG
Low dangerperimeter & point
WPG0 / 27 · 0.29 xG
BOS1 / 32 · 0.65 xG

BOS went 3-for-6 from high danger on 1.48 expected goals — 1.5 above expected.

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

Finishing vs expected

expectedactual
WPG
1 G · 4.20 xG · -3.2
BOS
6 G · 3.25 xG · +2.8
01234567

WPG finished -3.2 against expected, BOS +2.8.

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

Shot diet

goalsshots
WPG
WRIST0/22
SNAP0/5
TIP IN1/7
SLAP0/5
BACKHAND0/5
DEFLECTED0/0
BAT0/1
OTHER0/12
BOS
WRIST5/8
SNAP0/22
TIP IN1/3
SLAP0/4
BACKHAND0/1
DEFLECTED0/3
BAT0/0
OTHER0/9
WPG
BOS
Off the rush
1 G on 27
2.86 xG
4 G on 25
2.30 xG
Off rebounds
0 G on 6
0.87 xG
1 G on 3
0.42 xG

Wrist shots carried the volume: WPG went 0-for-22, BOS 5-for-8. 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
C. Hellebuyck
WPG · 21/27 · .778
-2.8
saved above expected
F
the night
By dangerG/attxGsaved
High danger3/61.5-1.5
Medium2/121.1-0.9
Low1/320.7-0.3

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

J. Swayman
BOS · 23/24 · .958
+3.2
saved above expected
A+
the night
By dangerG/attxGsaved
High danger0/71.5+1.5
Medium1/232.4+1.4
Low0/270.3+0.3

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

86 shots · press play to watch the game back

Where the shots came from

NHL play-by-play coordinates
WPG
45 shots
1
Final
86 shots
BOS
41 shots
6
WPG attackBOS attack
WPG BOS Goal

Each club shoots toward its own end — WPG left, BOS 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
1 G · 1 A · 3 SOG · 14:55 on ice · +2
L. Reichel
#75 · L · BOS
1 G · 1 A · 1 SOG · 14:45 on ice · +2
V. Arvidsson
#71 · L · BOS
1 G · 1 A · 2 SOG · 14:15 on ice · +2
Ranked from the box score — points first · Backcheck
What the model said beforehand

Before the game

Written Thu, Mar 19
Open the pre-game read
Written from the numbers

The read

Edited for clarity
◆ By the ModelJul 12, 7:51 AMEdited 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 2.5–2.6 goal game with the Bruins at 52% win probability. This is about as close to a pick'em as you'll find.

Boston's recent form doesn't inspire. The Bruins are underwater at a minus-5 goal differential over their last 10 games. The underlying numbers offer little refuge: at 5v5, Boston sits at 47.0% expected goals and 49.0% Corsi, while Winnipeg is marginally ahead at 48.0% xG% and 49.0% Corsi. Where Boston has built an edge is puck luck. The Bruins' PDO of 1.023 is running hot—expect regression.

C. Hellebuyck is on a back-to-back. Watch for either a backup start or a tired starter.

Nino Niederreiter is Winnipeg's primary threat. He's producing 0.87 expected goals per 60 minutes with 6 goals and 6 assists, including 3 high-danger chances; his 8.6% shooting rate leaves room for variance. Kyle Connor has been steadier—0.83 xG/60 with 25 goals and 30 assists, but only 2 high-danger tallies and a sustainable 13.0% shooting rate. Connor's volume and consistency matter more than Niederreiter's upside.

Boston counters with Viktor Arvidsson, who leads in expected threat. At 1.04 xG/60, Arvidsson has 18 goals and 24 assists with a 13.0% shooting rate—production he's earned. Tanner Jeannot rounds the matchup at 0.75 xG/60, 6 goals and 14 assists, with 2 high-danger goals and a modest 8.3% shooting clip.

Neither team is generating high-danger or rebound goals at a meaningful rate; both sit at 0%. The vulnerabilities are stark: Colin Miller is Winnipeg's liability, while Elias Lindholm carries the defensive load for Boston. In a coin flip this tight, marginal differences in goaltending and depth will decide it.

What the model said beforehand

The model's lean

BOS 52%
52%
BOS
Model favorite
48%
52%
WPG50BOS

BOS by 4 points of win probability — effectively a coin flip. Projected score WPG 2.5–2.6 BOS; 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
WPG← edge
edge →BOS
48.0%47.0%
49.0%49.0%
2.342.39
2.552.67
1.902.22
2.101.82
0.9981.023

BOS holds 4 of 6 process categories — and the luck row (0.998 vs 1.023) says BOS has been getting the bounces, which tends not to last.

Source · NHL stats API + our xG · 5v5
Form · Last 10
WPG
5-2-3
-1 GD · 1d rest
BOS
4-3-3
-5 GD · 2d rest
0.998
WPG PDO
Luck gauge · drifts to 1.000
1.023
BOS PDO
Luck gauge · drifts to 1.000
What decides it

Keys to the game

Regression watch
  • The Bruins' PDO is 1.023 — running hot, expect some regression.
Things to watch
  • C. Hellebuyck is on a back-to-back — watch for a backup start or a tired starter.
  • The Bruins are underwater at -5 goal differential over their last 10.
  • The Bruins' PDO is 1.023 — running hot, expect some regression.
Last game's lineup · confirmed at warm-up

Lineups

NHL box score
WPG
Expected in goal
C. Hellebuyck
back-to-back.870 last start
Backup Connor Hellebuyck · +5.5 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.

BOS
Expected in goal
J. Swayman
2 days rest.903 last start
Backup Jeremy Swayman · +28.8 GSAx this season

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
WPG
Nino Niederreiter6G 6A
0.87 xG/60 · 3 HD · 8.6% sh
Kyle Connor25G 30A
0.83 xG/60 · 2 HD · 13.0% sh
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
Keep going

Where to next