This is the 2025-26 edition — an archived read. Read the 2026-27 report →
Mason Lohrei
Boston Bruins Defense
33 points at 24 and a minus-43 — the worst plus-minus in the league — from the same 77 games.
| Season | Team | GP | G | A | PTS | +/- | PIM | PP | SH | GW | S | S% | TOI |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023-24 | BOS | 41 | 4 | 9 | 13 | -2 | 18 | 1 | 0 | 1 | 43 | 9.3 | 16:57 |
| 2024-25 | BOS | 77 | 5 | 28 | 33 | -43 | 16 | 1 | 0 | 0 | 92 | 5.4 | 19:32 |
| 2025-26 so far | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 118 | 9 | 37 | 46 | -45 | 34 | 2 | 0 | 1 | 135 | 6.7 | 18:38 |
This Season So Far
The 2025-26 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 28 assists in 77 games for 33 points, minus-43 — the worst rating in the entire league — on 19:32 a night.
The chance share is more forgiving: 47.7 per cent at five-on-five, the 32nd percentile, with on-ice goals of 49-67 against an expected 45-50. The minus-43 is largely a shorthanded and empty-net artefact on a club that lost constantly, and the underlying five-on-five play was mediocre rather than catastrophic. Both readings should be held at once.
The Finesse Game
The puck skills are genuine and unusual for a 6-5 defenceman. He carries out of trouble, he sees the seam pass from the blue line, and 28 assists from a defenceman on a club that scored 222 goals is a real total.
The skating is good for the size — long, easy, and quick enough to join a rush. What is missing is the second half of the decision: he attempts the difficult play at the wrong moment, and on the occasions it fails the puck ends up in the slot behind him.
The Physical Game
6-5 and 218, and he does not play to it at all. He does not clear a crease, does not win a battle by force, and can be moved off the puck by forwards 30 pounds lighter.
16 penalty minutes across 77 games. For a defenceman of this size playing 19 minutes a night, that is not discipline — it is absence.
The Intangibles
A second-round pick who arrived quickly and has been given an enormous amount of responsibility on a bad team at 24.
The two halves of him are far apart. The offensive tools are top-pair tools; the defensive reads are not NHL-standard yet, and a rebuilding club with no alternative has played him through the learning rather than around it. That is probably the right call and it produced the worst rating in hockey.
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.
- slot-man· shoots from where goals are scored
17.9% of his attempts in the slot, 92nd percentile among defencemen
Season to season, this measure repeats well (0.69) · 44% keep it
- sheltered· is started in the attacking end
60% of his end-zone starts in the attacking end, 91st percentile among defencemen
Season to season, this measure repeats well (0.66) · 47% keep it
“He carries out of trouble”
“he sees the seam pass from the blue line, and 28 assists from a defenceman on a club that scored 222 goals is a real total.”
“He does not clear a crease, does not win a battle by force, and can be moved off the puck by forwards 30 pounds lighter.”
“can be moved off the puck by forwards 30 pounds lighter”
“16 penalty minutes across 77 games. For a defenceman of this size playing 19 minutes a night, that is not discipline — it is absence.”
“the defensive reads are not NHL-standard yet”
The numbers underneath
On the ice
Five-on-five, 2024-25 · 1,205 minutes
- Expected goals
- 47.7%
- 32nd pct
- Shot attempts
- 47.3%
- 27th pct
share of the chances while he was out there
share of the attempts while he was out there
Goals while he was on the ice: 49 for, 67 against. Expected: 45.5 and 49.8.
The eye and the numbers
HindsightThe two rank him within 11 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 637 skaters in this edition with a report and enough ice time. The report bar ranks the mean of the grades above — 67 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, 2024-25 · 77 games
- Top speed
- 22.5 mph
- 82nd pct
- Bursts over 20 mph
- 0.56 a game
- Distance
- 2.85 miles a game
- Hardest shot
- 86.3 mph
- 24th pct
fastest he was clocked all season; the league's average best is 21.6
how often he reaches that speed, not how fast he goes
skated, all strengths
one shot; the league's average best is 89.7
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
2024-25 · 1205 minutes at five-on-five
- Andrew Peeke44%
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, 2024-25
- The club
- BOS took 48.4% of the expected goals as a club. His own share is 47.7% — 0.7 below the club he did it on.
- The role
- First pair, 1,205 minutes at five-on-five — 85th percentile in ice time.
With and without
| Teammate | Together | Him apart | Mate apart |
|---|---|---|---|
| Andrew Peeke | 46.3% | 48.8% | 50.0% |
| David Pastrnak | 52.3% | 44.2% | 50.4% |
| Morgan Geekie | 51.5% | 45.1% | 53.6% |
46.3% together, 48.8% for him apart and 50.0% for Peeke apart. Peeke was better away from him while his own share held, which is a mark against him more 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
151 unblocked shots in 2024-25, 5 of them goals. His median goal came from 28 feet. 13% of his shots came from inside twenty feet, 61% from beyond forty.