Pennant Clinch Matrix
Simulate September division races, evaluate live magic numbers, and test clinching decision trees based on today’s scheduled game outcomes.
Magic Number (M#)
1
Combinations of leader wins + trailer losses needed to clinch.
Clinching Paths Today
3 / 4
75% of scheduled slate permutations result in a clinch today.
Tragic Number (E#)
1
Challenger elimination threshold. When E# drops to 0, trailer is out.
Clinching Permutation Matrix
All possible game slate permutations today
How Clinching Scenarios & Magic Numbers Work
The Official Magic Number Formula
The standard MLB formula to determine the leader's Magic Number against a trailing competitor is:
M# = Games in Season (162) + 1 − Leader Wins − Trailer Losses
Any victory by the first-place team drops the magic number by 1. Any defeat by the second-place team drops it by 1. If both happen on the same day, the number drops by 2.
Source Grounding: Today's MLB Post
In the official MLB dispatch:
- Atlanta clinches NL East if: They beat Houston (2:10pm ET), OR Philadelphia loses to NY Mets (1:10pm ET).
- Because Atlanta's Magic Number is 1, either an Atlanta win OR a Philadelphia loss secures the crown today.
- Out of the 4 combined slate permutations, 3 seal the pennant today, while only 1 (Braves lose + Phillies win) keeps the race open for tomorrow.