Magic number / elimination number calculatorHERMES TOOLS · Sports data
Work out how many leader wins plus chaser losses are still needed, and what tonight's results would do.
Result
How it works: formula and examples
The magic number is how many leader wins plus chaser losses are still needed. Conservative formula: M = games in season + 1 − leader wins − chaser losses. Seen from the chaser's side, the same number is its elimination number against that rival.
Example: in a 162-game MLB season with the leader at 90 wins and the chaser at 65 losses, M = 163−90−65 = 8. If the leader wins tonight and the chaser loses, it drops from 8 to 6.
Another example: in an 82-game NBA season with the leader at 50 wins and the chaser at 33 losses, M = 83−50−33 = 0, so the chaser can no longer catch the leader in wins. Negative values are shown as 0.
The +1 assumes the chaser holds the tiebreaker; head-to-head rules, unequal schedules and multi-team wild card ordering are not handled. Reaching 0 against one chaser doesn't mean the division is clinched — check each team.
FAQ
How much does it drop if the leader wins and the chaser loses?
Each one counts once, so both together take off two; if only one happens, it drops by one.
What does an elimination number of 0 mean?
With equal season lengths and a conservative tiebreak assumption, the chaser can no longer catch this leader.
Can it calculate wild card qualification directly?
No. A wild card race means comparing every team still alive and applying tiebreakers.
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