xJawn NHL expected goals

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Mattias Samuelsson

D · Buffalo Sabres · career →

78 GP · 1,464 min 5v5
2025-26 · 5v5
Adjusts with rink filters
on-ice for◀ 5v5 offense
on-ice against5v5 defense ▶
How to read this map

One rink, both ends while Mattias Samuelsson is on the ice: what the team generates on the left, what it concedes on the right. Every attempt is a Gaussian bump of height = its model xG, summed per 60 minutes of ice time (a player's exposure is time, not games). The controls switch the surface (xG heatmapvs league, the league baseline per team-hour at the same strength) and the markers: × goal · on net · missed · small blocked — and own shots narrows the left end's markers to attempts Mattias Samuelsson took.

The page opens at 5v5; empty-net attempts are excluded throughout. On-ice membership comes from the shift charts; attempts without usable shift coverage are absent from both ends. Blocked-shot membership cannot be cross-checked against the play-by-play, so treat blocked-marker detail as softer than the rest.

Observed production

5v5 · on-ice
for against
axis spans ±118% of the defenseman cohort average · centre = average · right = more
Goalson-ice
83 98th pctl56 76th pctl
Shotson-ice
686 91st pctl665 90th pctl
Attemptson-ice
1,350 82nd pctl1,484 95th pctl
xGon-ice
64.8 90th pctl62.2 89th pctl
xGF%share of on-ice xG
51.0%65th pctl
0% 50% = even split · gray = cohort middle 50% / 90% 100%

Percentiles rank against the other defensemen over the display floor at the selected strength — a non-strength filter (rush, period, …) moves the bars but keeps that strength's spread as the backdrop.

Rolling on-ice xGF%

5v5 · on-ice
Per-game chance share while on the ice, smoothed. drag the slider to set the window

Model estimates

🔒 full season · not filtered
Season-long ratings — the filters above don't apply here.
creating   preventing   creates both  ·  paler = special teams  ·  solid = on-ice RAPM · hatched = skill rating  ·  ▽ = the total
Shooting
Conversionall shooter stages
outside the PP +0.66 goals vs average
+0.6693rd pctl
Offense
On-ice impactRAPM · xGF impact
-3.5313th pctl
Defense
On-ice impactRAPM · xGA, flipped
-0.0947th pctl
BlockingBlocking · season-resolved
+0.1073rd pctl
Special teams
Power playST RAPM · 3-season window
-0.0838th pctl
Penalty killST RAPM · season-resolved
-2.993rd pctl
Disciplinedrawn − taken
-0.0280th pctl
GAAgoals above average, this season
Offense impact -3.53 goals vs averageDefense impact -0.09 goals vs averageBlocking +0.10 goals vs averageConversion · outside the PP +0.66 goals vs averagePenalty kill -2.99 goals vs average
-5.9515th pctl
grouped by game state · 5v5 → power play → kill
−18.600 = league average+18.60

Ranked against defensemen; the band behind each bar is that cohort's spread (p5–p95, middle half brighter, dashed median), so where a bar lands against its band is the rank — the ordinal beside it makes that exact. Zero is whichever baseline the toggle selects — the league-average skater, or replacement level — and every row, its band and its ordinal are all drawn against that one baseline, so the bar and the number can never describe different things. Each row's bar grows from zero, so its end IS its value; the composite is the rows stacked, running both ways from zero, so only it carries a to mark the net. The rows sum to the total with nothing left over. The per-shot rating is quality only: it says nothing about how many attempts a player generates or faces, which is what the attempts figure is for.

Usage & context

descriptive · not modeled
The job the coach handed Mattias Samuelsson, not how well it went. Not a modeled component: each is its own metric (minutes, a rate, a TOI share, or opponents'/teammates' net xG-RAPM), shown with a cohort percentile only where one exists, never added together. Not a grade. The deployment rows are measured over the same 5v5 stints the isolate is fit on (regular season + playoffs); ice time and the penalty rates are all situations, every game — penalties create non-5v5 time, so a 5v5 denominator would inflate every rate.
Time on iceall situations · min per game
22:47per game
Penalties takenminor penalties / 60
0.43per 60 · all situations
Penalties drawnminor penalties / 60
0.38per 60 · all situations
Zone startsOZS% · O-zone start share
48%offensive / (off + def)
Score stateTOI by game state
trail 27%tied 33%lead 40%
leads a lot
Competition (QoC)opponents' net xG-RAPM
+0.011xG/60
Teammates (QoT)teammates' net xG-RAPM
+0.078xG/60
On-the-flyshare of 5v5 TOI
62%of 5v5 TOI
0cohort average100 pctl

A skater absent from the fit counts as exactly cohort average (0) in QoC/QoT — the same claim ridge shrinkage makes. Penalty rates are descriptive only: taken-rate includes defensively correct penalties, and neither side is opponent- or deployment-adjusted. Nothing here is priced in goals.

Full table · all numbers
FamilyStatValue (current slice)
Observed ◆ filtered Goals on-ice for / against 83 / 56
Observed ◆ filtered xG on-ice for / against 64.8 / 62.2
Observed ◆ filtered Shots on-ice for / against 686 / 665
Observed ◆ filtered Attempts on-ice for / against 1,350 / 1,484
Observed ◆ filteredxGF% 51.0%
Modeled 🔒 season Conversion — all shooter stages +0.66 93rd pctl
Modeled 🔒 season ↳ Conversion — 232 outside the PP 75th pctl
Modeled 🔒 season ↳ Conversion — 4 on the PP 51st pctl
Modeled 🔒 season ↳ Conversion — per-shot skill 94th pctl
Modeled 🔒 season On-ice impact — RAPM · xGF impact -3.53 13th pctl
Modeled 🔒 season On-ice impact — RAPM · xGA, flipped -0.09 47th pctl
Modeled 🔒 season Blocking — Blocking · season-resolved +0.10 73rd pctl
Modeled 🔒 season ↳ Blocking — 2,081 attempts faced 99th pctl
Modeled 🔒 season ↳ Blocking — per-shot suppression 87th pctl
Modeled 🔒 season Power play — ST RAPM · 3-season window -0.08 38th pctl
Modeled 🔒 season Penalty kill — ST RAPM · season-resolved -2.99 3rd pctl
Modeled 🔒 season Discipline — drawn − taken -0.02 80th pctl
Modeled 🔒 season GAA -5.95 15th pctl
ContextTime on ice — all situations · min per game 22:47 (86th pctl)
ContextPenalties taken — minor penalties / 60 0.43 (20th pctl)
ContextPenalties drawn — minor penalties / 60 0.38 (44th pctl)
ContextZone starts — OZS% · O-zone start share 48% (43rd pctl)
ContextScore state — TOI by game state trail 27%, tied 33%, lead 40%
ContextCompetition (QoC) — opponents' net xG-RAPM +0.011 (68th pctl)
ContextTeammates (QoT) — teammates' net xG-RAPM +0.078 (86th pctl)
ContextOn-the-fly — share of 5v5 TOI 62%

Observed values reflect the active rink filters; modeled values are fixed at their full-season fit.

On-ice numbers pair the regular-season shot set with shift-chart membership; skaters and goalies under the display floors are fit but not shown. Modeled rows come from the value artifact keyed to RAPM fit rapm__0cd6d075 on nested_structure__nested_structure_xg__d2ec2662 (the joint-xg structural baseline), with ratings from joint__baseline_xg__f3e3111e (as of 2026-06-14) — separate surfaces from the box-score xG model badged in the footer.