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Baseball Run Differential Tracker

Track game-by-game runs for and against to see whether the record matches the team performance underneath it.

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Team formSteady, check close games

Run differential board

See total margin, recent form, expected wins, close-game pressure, and blowout context without reading a long scorebook.

Total run diff

5Positive margin

Games

8

Record 5-2-1

Runs for

38

Runs against 33

Average run diff

0.6

Last 5 run diff 3

Goal pace

123.5%

Expected wins 4.6

Season target

Set the team name and season goal so the differential can be read against the record pace.

Game run log

Enter runs scored and allowed for each game. Notes help explain whether the margin came from bullpen, offense, defense, or schedule.

DateOpponentVenueRuns scoredRuns allowedDiffResultNote
2W
-4L
4W
1W
-6L
1W
0T
7W

Reading guide

Run differential = RS - RA. Pythagorean win % = RS^2 / (RS^2 + RA^2).

Use the same scoring source for every game so the comparison stays consistent.

A positive differential with poor record often points to close-game execution.

A negative recent differential can signal fatigue, injuries, or tougher schedule even when season totals look fine.

Pythagorean expected wins are an estimate, not an official standings rule.

How run differential tracking works

Run differential is runs scored minus runs allowed. It helps separate team strength from close-game luck, bullpen timing, and schedule swings.

Usage notes

  • Run differential = runs scored - runs allowed.
  • Average run differential = total differential / games.
  • Pythagorean win percentage = RS^2 / (RS^2 + RA^2).

Frequently asked questions

What is a good run differential?expand_more

A positive number means the team scored more than it allowed. Larger positive margins usually signal stronger underlying play.

Why compare record and expected wins?expand_more

A team can have a good run differential but a weaker record if it loses close games or wins blowouts.

Should ties be included?expand_more

For leagues or scrimmages with ties, include them in game count while still using scored and allowed runs for differential.

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