Armchair Hockey Scout

Ask the book

2026-27 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 2026-27 edition’s index; readings rest on the players’ own pages; the model never counts. Twenty questions an hour.

Joonas Korpisalo

Photo by TheAHL, CC BY 2.0

Joonas Korpisalo

New York Rangers Goaltender #70

A .8942, 17 thousandths behind the man in front of him.

SeasonTeamGPWLOTLGAGAASOSASV%
2015-16CBJ3116114782.600969.919
2016-17CBJ14751382.881401.905
2017-18CBJ18881583.320564.897
2018-19CBJ271073672.950651.897
2019-20CBJ3719125922.6021030.911
2020-21CBJ339137963.300904.894
2021-22CBJ227110784.150634.877
2022-23CBJ/LAK39181441042.8711206.914
2023-24OTT55212641683.2701522.890
2024-25BOS2711103742.903693.893
2025-26BOS311496903.151851.894
2026-27 so far——————————
Career—334140126389433.0689425.900

This Season So Far

The 2026-27 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

31 appearances, 14-9-6, a 3.15 goals-against average and a .8942 save percentage with 1 shutout. His career figure across 334 games is .8999.

The Physical Game

6-4, 200, and he plays a deep, positional game that depends on being square rather than quick. Against volume from the perimeter that works; against lateral movement it does not.

Rebound control is ordinary and it is the most consistent criticism across 11 seasons.

The Mental Game

334 games across 5 organisations, most of them as somebody’s second goaltender, and he has taken every stretch as a starter without visible complaint.

14 wins in 31 appearances behind a club that finished 29th at generating offence is a reasonable outcome.

The Intangibles

The comparison inside the dressing room is the page. Shesterkin stopped .9116 across 51 appearances; Korpisalo stopped .8942 across 31. That is a 17-thousandth gap behind the same defence, and it is why New York’s goaltending finished 2 goals worse than the chances faced despite having one of the best goaltenders alive.

The league median among goaltenders with 25 or more games was .896. He was just under it.

He is 32. On a roster with Shesterkin the backup job matters less than almost anywhere, which is fortunate.

The numbers underneath

Recent form

Last 20 appearances, 2025-26, oldest first

.889

save percentage over his last 8, on 226 shots · .899 across these 20

Each bar is one appearance, taller being a better save percentage. Filled bars are .920 or better.