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Hockey Explained: The Essential Guide for Fans and Smart Bettors

Hockey Explained: The Essential Guide for Fans and Smart Bettors

Chris Tacker

Written by Chris Tacker
Updated August 30, 2025
6 min to read

Hockey explained in plain English: rules, periods, penalties, key stats (including the “S” hockey stat), and how to use BetRocket’s data to make smarter picks. Throughout, you’ll see where BetRocket helps you quantify edge (EV+), track line moves, and avoid stale prices.

The game at a glance

Ice hockey is played 5-on-5 plus goalies over three 20-minute periods. Most regular-season games that are tied after 60 minutes go to 3-on-3 overtime and then, if needed, a shootout; many betting markets settle at the end of regulation, while others explicitly include OT/shootouts — always check the product you’re betting. Penalties send a player to the box (2, 4, or 5 minutes), creating a power play for the opponent; special-teams minutes (power play vs. penalty kill) drive a large share of game-to-game scoring variance.

The markets you’ll actually see

  • Moneyline (2-way or OT-incl.): Your team just needs to win; some books include OT/shootout, others offer “regulation only”.
  • Moneyline (3-way): Home / Draw / Away for the 60-minute result only.
  • Puck line (spread, typically −1.5 / +1.5): Favorite must win by two; underdog can lose by one and still cover.
  • Totals (Over/Under, e.g., 5.5 or 6.5): Combined goals; remember that late empty-net goals swing both totals and puck-line outcomes.

BetRocket angle: We compare implied probabilities across books, flag EV+ spots, and highlight regulation-only vs. OT-inclusive discrepancies so you’re not betting the wrong product for your thesis.

Box-score basics you must know

  • G, A, P (Goals, Assists, Points): Points = Goals + Assists; simple production barometer.
  • +/- (Plus/Minus): Even-strength on-ice goal differential; noisy and team-context heavy—use with caution.
  • TOI (Time on Ice): Role and trust indicator; big movers in TOI often precede price drift.
  • PIM (Penalty Minutes): Discipline; extreme PIM can signal future special-teams exposure.
  • FO% (Faceoff %): Possession jump-starts; marginal compared to shot quality but useful on special teams.

What does the “S” hockey stat mean?

If you’ve ever wondered about “s hockey stat”, most box scores and tickers use S to mean Shots on Goal (sometimes shown as SOG). It’s the count of pucks that would have entered the net if not stopped by the goalie (blocked or missed shots don’t count). Some sites also display Sh% (shooting percentage) and SV% (save percentage); don’t confuse S (shots) with Sh% — one is volume, the other is efficiency.

The advanced metrics that actually move long-term ROI

  • Corsi / Fenwick (Shot Attempts): Team shot-attempt share at 5-on-5 (CF%, FF%). Good proxies for territorial control but treat them as inputs, not gospel.
  • Expected Goals (xG, xGF%, xGA): Weights each shot by location/type to estimate scoring probability; far more predictive than raw attempts.
  • High-Danger Chances (HDCF/HDAF): Subset of quality looks from prime areas; complements xG.
  • PDO: Team on-ice shooting% + save% (scaled). Extreme highs/lows tend to regress—great for spotting overreactions to short streaks.
  • Goalie quality (GSAx – Goals Saved Above Expected): How many goals a goalie prevents relative to shot quality faced; the cleanest single stat for netminder impact.

Goalie confirmations, rest, and schedule effects

Starting goalies swing lines more than any single skater. Teams on a back-to-back (especially with travel) leak pace and defense late, and coaches often rotate goaltenders accordingly. Three-in-four-nights or long road swings introduce fatigue that models must price in; BetRocket surfaces these schedule flags alongside odds so you can wait for the right number instead of forcing an early position.

Special teams: power play and penalty kill — beyond simple percentages

Traditional PP% and PK% describe outcomes, but they’re noisy over small samples. Prefer expected goals rates on special teams, shot-quality allowed/created, and entry/clear efficiency (can they get set up, can they get it out?). Books and markets still overreact to raw PP%/PK% streaks; that’s where value appears on totals and sides when the underlying process hasn’t changed.

Score effects, empty nets, and late-game volatility

Teams trailing late push up shot volume and allow more rush chances the other way. Coaches pull the goalie earlier than they did a decade ago, lifting totals variance in the final minutes. If you’re on a favorite −1.5, those empty-netters are your friend; if you’re sweating an Under, they’re the villain — price that risk in advance rather than tilting after the fact.

Turning numbers into decisions

Start with a game thesis (pace, shot quality, goalie gap, special-teams edge). Cross-check it against xG share, high-danger splits, and GSAx. Decide whether your angle is best expressed as a side (ML/puck line), a total, or a derivative (1P, team total, or player shots). Finally, shop for the product that matches settlement with your idea (regulation-only vs. OT-incl.). BetRocket stitches these steps together — EV+ scanning, line-move tracking, and cross-book comparisons — so you act at the right number, not the first number.

Common pitfalls (and how to avoid them)

  • Chasing hot/cold streaks without checking xG and PDO for regression cues.
  • Ignoring the product spec (e.g., betting a 3-way ML when your thesis assumes OT).
  • Overvaluing plus/minus and raw PP%/PK%.
  • Underweighting goalie quality and back-to-back fatigue.
  • Betting the logo, not the price. Smart betting is price discipline, not fandom.

Conclusion

If you came for hockey explained, keep three pillars in mind: (1) know how markets settle (reg vs. OT), (2) read performance through xG, high-danger chances, and goalie GSAx instead of last game’s score, and (3) respect schedule and late-game volatility. Treat “S” as shots on goal, not a performance grade, and use efficiency stats (Sh%, SV%, GSAx) to add context. Pair that framework with BetRocket — we’re an analytics platform that surfaces EV+ edges, monitors line movement, and normalizes prices — so your hockey decisions are informed, disciplined, and repeatable.