Armchair Hockey Scout

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2024-25 edition Ask a direct question about this edition of the book — who, how many, how common, which group more — and it is answered with a table computed on this page from the edition’s index: the season line, height and age, the on-ice percentiles, the grades and the traits read out of every report. Ask for a view on named players — what a comparison comes down to, what makes a man — and you get the book’s reading of their own pages, and only those. The model turns your question into a query and phrases the result, or reads the pages it is handed; it never originates a figure, and an answer carrying a figure that is on neither the table nor the pages is withheld. It does not forecast, and it says so when a question is outside what the book holds.

Tables are computed on this page from the 2024-25 edition’s index; readings rest on the players’ own pages; the model never counts. Twenty questions an hour.

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24

Mathew Dumba

Dallas Stars Defense

Seventh overall in 2012, 487 penalty minutes in 674 games, and a chance share in the 43rd percentile.

SeasonTeamGPGAPTS+/-PIMPPSHGWSS%TOI
2013-14MIN13112-52100128.312:27
2014-15MIN588816+1323202869.315:01
2015-16MIN81101626+1386031526.616:50
2016-17MIN76112334+15596011318.420:20
2017-18MIN82143650+15412041768.023:49
2018-19MIN32121022-5216019312.923:23
2019-20MIN6961824-7411011673.622:30
2020-21MIN5161521+146101896.722:17
2021-22MIN5772027+9471011166.023:06
2022-23MIN7941014-881002994.021:17
2023-24ARI/TBL764812-1888000864.719:44
2024-25 so far—————————————
Career—67483165248+114872601612076.920:31

This Season So Far

The 2024-25 season has not started. The empty row above is his, and both it and this paragraph fill in on their own from the morning after he first plays: what he has done, what it is worth against his own last season, and the run he is on when the two disagree.

Last Season

Seventy-six games in Tampa Bay, 4 goals and 8 assists, 88 penalty minutes, 19:44 a night and minus-18. He took 46.3 per cent of the expected goals at five-on-five over 1,252 minutes, the 27th percentile, and his ice went 46-63 against an expectation of 45.28-52.43.

Fifteen goals of scoring above expectation in one direction and seven fewer against in the other, and a minus-18 anyway. Tampa Bay had the worst goaltending in the league last season and that is most of the explanation.

The Finesse Game

Eighty-six shots at a median of 48 feet with 17 per cent from inside 20 — a higher share of close attempts than most defencemen take, and he activates into the slot more than his role suggests. Four went in.

Twenty-six career power-play goals and 83 in 674 games is the record of a defenceman whose shot was once a genuine weapon in Minnesota. It has not been one for three seasons. One hundred and sixty-five career assists.

The Physical Game

He finishes his checks hard and 487 penalty minutes in 674 games is the record of a defenceman who initiates. At 6-0 and 191 he is not big and he hits like a much heavier man.

Eighty-eight penalty minutes in 76 games is a high rate and a fair share of it is taken after being beaten to a spot. He clears the front of his own net.

The Intangibles

Seventh overall in 2012 out of Regina, ten seasons in Minnesota, and then a season split between Arizona and Tampa Bay. He is 30 and joining his fourth organisation in two years.

Dallas signed him to be the third-pair defenceman who hits people, which is a long way from what a seventh pick is drafted for and a perfectly sensible use of him.

What kind of player

The searchable half of the report. The first group is computed from the season's own data; the rest are read out of the prose above, and each one carries the sentence that produced it. A subject the report never raised is simply absent.

  • measuredcomputed here from the season's own data
  • a strengthread out of the prose, and claimed

Each computed tag also says how well its measure holds up from one season to the next, because a tag describes a season that has finished and a reader will assume it predicts the one coming. Some do and some do not, and the gap is wide: five-on-five workload repeats well, scoring late does not repeat at all.

  • slot-man· shoots from where goals are scored

    19.8% of his attempts in the slot, 96th percentile among defencemen

    Season to season, this measure repeats well (0.69) · 44% keep it

  • punishinga strength· finishes checks; hurts people legally

    “He finishes his checks hard and 487 penalty minutes in 674 games is the record of a defenceman who initiates.”

  • fouls-when-beatena strength· the stick foul that follows losing a step

    “Eighty-eight penalty minutes in 76 games is a high rate and a fair share of it is taken after being beaten to a spot.”

  • clears-the-creasea strength· moves grown men off the front of his net

    “He clears the front of his own net.”

The numbers underneath

On the ice

Five-on-five, 2023-24 · 1,252 minutes

Expected goals
46.3%
28th pct

share of the chances while he was out there

Shot attempts
46.2%
23rd pct

share of the attempts while he was out there

Goals while he was on the ice: 46 for, 63 against. Expected: 45.3 and 52.4.

The eye and the numbers

Hindsight
Report
20th
Numbers
28th

The two rank him within 8 points of one another. It was written for a back edition, with the seasons that followed already known. Neither the agreement nor the gap says anything about the eye, and this report is excluded from the club-level comparison for the same reason.

Both bars are percentiles among the 652 skaters in this edition with a report and enough ice time. The report bar ranks the mean of the grades above — 62 on their own scale — against every other report's mean. The numbers bar ranks his share of expected goals. A gap is a disagreement about where he belongs, not two scales talking past each other.

Tracked

NHL Edge, 2023-24 · 76 games

Top speed
21.5 mph
42nd pct

fastest he was clocked all season; the league's average best is 21.7

Bursts over 20 mph
0.37 a game

how often he reaches that speed, not how fast he goes

Distance
2.69 miles a game

skated, all strengths

Hardest shot
99.0 mph
90th pct

one shot; the league's average best is 90.2

A top speed is a season's best, and a man who takes more shifts gets more tries at one; the percentile is the feed's own, against every skater, and says less between a top-pair defenceman and a fourth-line wing than it does between two men in the same job. The counts are shown per game for the same reason.

Usual linemates

2023-24 with ARI · 953 minutes at five-on-five

Share of his five-on-five ice time spent alongside each player, measured from shift charts. Special teams are excluded: a power-play unit is not a line.

Why the numbers land there

Five-on-five, 2023-24

The club
TBL took 50.5% of the expected goals as a club. His own share is 46.3% — 4.2 below the club he did it on.
The role
1,252 minutes at five-on-five — 86th percentile in ice time.

With and without

TeammateTogetherHim apartMate apart
Travis Dermott40.8%48.2%47.9%
Nick Bjugstad43.8%47.1%50.6%
Lawson Crouse42.7%47.6%52.8%

40.8% together, 48.2% for him apart and 47.9% for Dermott apart. Both were better apart than together — the pairing was doing neither of them any favours.

Expected-goal share while both were on the ice, and for each man in the minutes he played without the other. Apart is the pair subtracted from his own totals. It does not settle who was carrying whom — apart from each other, both were still playing with somebody — but it does say whether the share travelled when the pairing broke up.

Where he shoots from

goal on goal missed

131 unblocked shots in 2023-24, 4 of them goals. His median goal came from 27 feet. 17% of his shots came from inside twenty feet, 64% from beyond forty.