How we calculate the playoff race

From league data to your team page

We read standings and schedules from the NHL and MLB data feeds, then calculate the playoff paths for each team. Standings are cached for about five minutes. A page is a view of the latest data available to that calculation, not a play-by-play scoreboard.

A final score, a league correction, and a cache refresh can arrive at different times. If a number looks stale immediately after a game, check again after the standings update. If it still looks wrong, send us the team and time.

A magic number is a countdown, not a prediction

Magic measures the remaining progress needed to secure a playoff path against rivals' possible finishes. Elimination, or “tragic,” measures the margin before the remaining paths close. MLB uses wins; NHL uses standings points, including the point awarded for an overtime or shootout loss.

We consider division and wild-card routes rather than treating the current final playoff position as the only target. The rival that controls a number can change after another game.

A simple baseball example

Suppose your team has 90 wins and one relevant rival can finish with at most 94. Five additional wins put your team strictly above that ceiling at 95. If your team wins once and that rival loses once, the gap becomes three: your team has 91 and the rival's ceiling is 93.

This illustrates one rival and assumes a tied record does not secure the spot. The site's actual playoff calculation also considers other rivals and the available qualification routes. Do not apply this single-rival example as the complete wild-card formula.

Why numbers can move on an off day

Your team's record can stay unchanged while a rival loses part of its maximum possible finish. That can improve your team's position without a game of its own. Conversely, rivals winning can reduce the room available to a chasing team. A change in the controlling rival can also make the movement differ from a simple one-game countdown.

Daily email comparisons require snapshots from both today and yesterday. When history is missing, we do not invent a prior number. Snapshot comparisons and live pages may differ because they represent different times.

Rooting guides and tiebreakers

The rooting guide applies a possible game result to the current standings and recalculates your team's numbers. NHL outcomes distinguish regulation and overtime where those affect points or tiebreaks. Only regular-season games belong in a regular-season qualification guide.

Individual changes are not always additive. Two favorable results may affect the same controlling rival or change which rival matters. Read any grouped-scenario note before adding changes together.

Tied records need additional rules. The model uses the tiebreak information represented in its inputs and conservative assumptions where that information is incomplete. Numbers can differ from an official clinching announcement. Treat league announcements as authoritative and report discrepancies rather than assuming a displayed zero settles every unusual case.

For sport-specific detail, read the NHL guide or the MLB guide.

Odds and the offseason

Playoff odds estimate how often a team qualifies under the simulation's assumptions. A rounded probability is not a mathematical clinch or elimination. A magic number and an odds percentage answer different questions.

After the regular season, final standings can remain available until the next season's feed starts. Preseason and postseason results do not change that completed regular-season race. We suppress regular-season clinching scenarios when the season is complete.

These tools explain a race; they cannot guarantee future results, uninterrupted source data, or a correct answer for every exceptional league ruling.