The One-Page Card
When you cannot remember a mark.
Position numbers
1
Pitcher
2
Catcher
3
First base
4
Second base
5
Third base
6
Shortstop
7
Left field
8
Center field
9
Right field
Reaching base
1B / 2B / 3B / HR
Hit, by the base reached
BB
Walk
HBP
Hit by pitch
E6
Error, by the fielder who made it
FC
Fielder's choice
CI
Catcher's interference
Outs
6-3
Fielded by 6, thrown to 3
F8
Fly out
L4
Line out
K
Strikeout swinging
Ʀ
Strikeout looking
SAC / SF
Sacrifice bunt / sacrifice fly
The line score
R
Runs scored
H
Hits
E
Errors charged
LOB
Runners left on base
Notation is convention, not rule. No rulebook in either sport says how to draw any of this — so another scorekeeper's book can look different and still be right.
Everything on these cards is taught in the course and cited in its scoring verification log. Anything your league sets for itself — pitch limits, run rules, time limits, re-entry — is deliberately not here, because it differs everywhere. See Know Your League.