Armchair Hockey Scout

Ask the book

2023-24 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 2023-24 edition’s index; readings rest on the players’ own pages; the model never counts. Twenty questions an hour.

25

Sebastian Aho

New York Islanders Defense

Five-foot-ten and 180 pounds on a blue line that averages 6-2, and the best chance share of any defenceman on it.

SeasonTeamGPGAPTS+/-PIMPPSHGWSS%TOI
2017-18NYI22134-56100244.216:15
2020-21NYI3112-12000425.013:21
2021-22NYI3621012-610000345.916:27
2022-23NYI7151823+922000895.616:46
2023-24 so far—————————————
Career—13293241-3401001516.016:31

This Season So Far

The 2023-24 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

5 goals and 18 assists in 71 games — 23 points — at 16:46 a night. Plus-9, 89 shots, 22 penalty minutes, across 1,084 five-on-five minutes.

52.5 per cent of the expected goals, the 70th percentile — the highest of any Islanders defenceman. His ice finished 48-41 against an expectation of 46.02-41.66, which is to say the goals came out where the chances said.

Attach the deployment before reading that as a verdict, because on this club it is never neutral. He started 61.2 per cent of his shifts in the attacking zone, the 92nd percentile: 337 attacking draws against 214, while Pelech was taking 431 of the other kind. Both men finished above fifty. Only one of them was asked to do it from his own goal line.

Four seasons, 132 games, 41 points.

The Finesse Game

89 shots at a median of 52 feet, 75 per cent from beyond forty, and five goals.

Beyond forty: 59 shots on goal and 2 goals. Inside twenty: eight shots and two goals.

The shot is not the file. The file is that a 5-10, 180-pound defenceman gets the puck out of his own end cleanly enough to hold a top-four job on a club whose other five defencemen average a shade over 6-2 and 213 pounds.

He does it by turning away from pressure rather than absorbing it, taking the puck below his own goal line and coming out the other side, and by making the short pass rather than the long one. 78 wrist shots and 34 slap out of 131 tracked attempts.

32 career assists against 9 goals. Everything in the offensive half of the file goes through somebody else, and he is good enough at delivering it that eighteen assists came from sixteen minutes a night.

The Physical Game

5-10 and 180 pounds, with 22 penalty minutes.

Top speed 22.1 mph, the 38th percentile; 0.5 bursts a game, the 24th; 2.32 miles a game, the 32nd.

That is the surprise, and it is worth being exact about it: he is not a small defenceman who survives on skating. The measurements say ordinary speed, few sprints and low mileage. What he survives on is position, angles and the willingness to take the puck into the corner knowing what happens next.

He cannot win a puck against a heavy forward on the wall and does not try. He is moved off the front of his own net, and the club protects him from having to be there by giving him the attacking end and a partner who is not.

That is the whole trade and it works. A defenceman this size holding a regular job at all is unusual enough that the 92nd-percentile zone starts are the price rather than the objection.

The Intangibles

One hundred and thirty-ninth overall in 2017, the fifth round, out of Umea, and 132 games spread across six seasons of not being able to hold the job.

Seventy-one games last season is more than his previous four years combined.

He is twenty-seven, which means this is what he is rather than what he might become. What the file argues is that a small, ordinary-skating defenceman who moves the puck can be a genuinely useful third-pair player if the club is honest about where to start him — and that the Islanders, of all clubs, are unusually willing to be honest about that.

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
  • he lacks itraised, and he does not have it

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.

  • sheltered· is started in the attacking end

    61% of his end-zone starts in the attacking end, 95th percentile among defencemen

    Season to season, this measure repeats well (0.66) · 47% keep it

  • transitiona strength· carries it out; gains the line under control

    “He does it by turning away from pressure rather than absorbing it, taking the puck below his own goal line and coming out the other side, and by making the short pass rather than the long one.”

  • hard-to-movehe lacks it· cannot be shifted from where he decides to stand

    “He cannot win a puck against a heavy forward on the wall and does not try.”

  • clears-the-creasehe lacks it· moves grown men off the front of his net

    “He is moved off the front of his own net, and the club protects him from having to be there by giving him the attacking end and a partner who is not.”

  • playmakera strength· passes up the shot a scorer takes

    “Everything in the offensive half of the file goes through somebody else, and he is good enough at delivering it that eighteen assists came from sixteen minutes a night.”

The numbers underneath

On the ice

Five-on-five, 2022-23 · 1,084 minutes

Expected goals
52.5%
71st pct

share of the chances while he was out there

Shot attempts
52.4%
74th pct

share of the attempts while he was out there

Goals while he was on the ice: 48 for, 41 against. Expected: 46.0 and 41.7.

The eye and the numbers

Hindsight
Report
34th
Numbers
71st

The numbers rank him 37 points above where the report does. 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. Why the numbers land there sets out the club he did it on, the minutes he played and the men he played them with.

Both bars are percentiles among the 638 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, 2022-23 · 71 games

Top speed
22.1 mph
68th pct

fastest he was clocked all season; the league's average best is 21.5

Bursts over 20 mph
0.48 a game

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

Distance
2.32 miles a game

skated, all strengths

Hardest shot
91.8 mph
50th pct

one shot; the league's average best is 90.0

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

2022-23 · 1084 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, 2022-23

The club
NYI took 49.7% of the expected goals as a club. His own share is 52.5% — 2.8 above the club he did it on.
The role
Third pair, 1,084 minutes at five-on-five — 68th percentile in ice time.

With and without

TeammateTogetherHim apartMate apart
Noah Dobson52.8%52.2%48.5%
Brock Nelson50.7%53.3%49.7%
Scott Mayfield54.4%51.7%48.6%

52.8% together, 52.2% for him apart and 48.5% for Dobson apart. Dobson was worse away from him while his own share held — the pairing was doing more for Dobson than for him.

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

125 unblocked shots in 2022-23, 5 of them goals. His median goal came from 25 feet. 6% of his shots came from inside twenty feet, 75% from beyond forty.