Backcheck
Combinations · chemistry

The Line Lab

Which trios actually work when they're on the ice together. We compare what a line shouldproduce given who's on it against what it actually produces — the difference is chemistry. Every unit below really played together at 5-on-5; nothing is hypothetical.

How to read this

Nothing here is invented: every line and pair below actually played together at 5-on-5, with real minutes attached. For each unit we show its observed — the slice of scoring chances it controlled while on the ice, where 50% means break-even.

The interesting part is the split. We first compute an : what those players should produce together if a line were just the sum of its parts. Whatever the real unit does beyond that is the — the closest a spreadsheet gets to measuring whether three players actually fit. Small-minute units are noisy, so read a big bonus on 30 minutes as a hypothesis, not a verdict — and remember this is a model estimate, not the coach's lineup card.

BASE
what the unit “should” produce — its members' individual profiles, added up
CHEM
observed share minus base: the whole vs. the sum of the parts
PROJ
base + chem — the model's expectation if the unit stays together
TICK
the hairline on each bar marks 50% — the break-even line
Fine print · verbatim from the model
  • Lines recovered from MoneyPuck lines.csv (5on5, observed deployment); chemistry = observed xG% minus additive archetype base. Model-estimated.
TBLTampa Bay Lightning85 units observed · 5v5As of Sun, Sep 20
Forward lines
3 units
  • 01
    Yanni Gourde – Oliver Bjorkstrand – Pontus Holmberg
    Together this unit controls play outright — 69% of expected goals, 17 points better than these players' profiles predict. Real chemistry.
    79 min together 52 +17 → proj 69
    69.0%
    · obs.
  • 02
    Anthony Cirelli – Brandon Hagel – Gage Goncalves
    Together this unit controls play outright — 68% of expected goals, 10 points better than these players' profiles predict. Real chemistry.
    64 min together 58 +10 → proj 68
    68.0%
    · obs.
  • 03
    Nikita Kucherov – Jake Guentzel – Brayden Point
    Together this unit plays about even — 48% of expected goals, 5 points WORSE than the talent predicts — worse together than apart.
    220 min together 53 -5 → proj 48
    48.0%
    · obs.
Defense pairs
3 units
  • 01
    Erik Cernak – Charle-Edouard D'Astous
    Together this unit controls play outright — 60% of expected goals, 27 points better than these players' profiles predict. Real chemistry.
    227 min together 33 +27 → proj 60
    60.0%
    · obs.
  • 02
    Darren Raddysh – J.J. Moser
    Together this unit controls play outright — 58% of expected goals, 24 points better than these players' profiles predict. Real chemistry.
    882 min together 34 +24 → proj 58
    58.0%
    · obs.
  • 03
    Max Crozier – Declan Carlile
    Together this unit controls play outright — 55% of expected goals, 24 points better than these players' profiles predict. Real chemistry.
    250 min together 32 +24 → proj 55
    55.0%
    · obs.
◆ The ModelObserved 5v5 deployment · MoneyPuck linesModel-estimated proxy, not a lineup card

Lines recovered from MoneyPuck lines.csv (5on5, observed deployment); chemistry = observed xG% minus additive archetype base. Model-estimated.