Guide, BaseballScorecard.org

Play Cell Anatomy

1	Out number	Which out of the inning (1, 2, 3)
2	Count	Ball-strike count at end of at bat
3	Pitch log	Type + velocity for every pitch 92 SI (Ball) 95 FF (Strike/Foul) 93 SI (In play)
4	Pitch location	Strike zone chart; dot color = pitch result
5	Base paths & hash marks	Runner advancement; 1/2/3 hashes = 1B/2B/3B
6	RBI marker	Filled diamond per run batted in
7	Scoring notation	Play result at bottom of cell (when diamond is present)
8	ABS challenge	Purple W / L badge + purple dot in zone
9	Substitution	Left line = pinch hitter (PH); right line = pinch runner (PR)
10	Pitching change	Square-block line between rows with S/P/K stats
11	Centered notation	When no diamond is shown, the scoring shorthand is centered. For example, G63 means groundout (G), shortstop (6) to first baseman (3). Some scorekeepers write this as G6-3 with dashes between the positions.
12	Active cell	Highlighted background on the current batter's cell during live games
13	Batter & pitcher stance	Pill shapes near the strike zone. The larger, lower pill is the batter (R or L side of plate). The smaller, higher pill is the pitcher (throwing hand). Handles switch hitters per at-bat.

Hits and the Diamond

The diamond represents the base paths. Thick lines trace runner advancement. Perpendicular hash marks on the home-to-first segment indicate the hit type. A filled diamond with white text means a home run.

Substitutions

Substitution lines mark when a new player enters the game. A left vertical line means pinch hitter, a right vertical line means pinch runner or defensive sub. A square-block horizontal line between rows marks a pitching change, with the outgoing pitcher's strike/pitch/K totals.

Pitch Types

FF	Four-seam fastball
SI	Sinker (two-seam)
FC	Cutter
SL	Slider
CU	Curveball
CH	Changeup
FS	Splitter
KC	Knuckle curve
KN	Knuckleball
ST	Sweeper
SV	Slurve

Notation

BB	Walk (base on balls)
BI	Batter interference
BK	Balk
CI	Catcher interference
CS	Caught stealing
CSDP	Caught stealing double play
DI	Defensive indifference
DP 643	Double play (split: prefix + positions)
E6	Error by shortstop (6)
F8	Flyout to center field (8)
FC46	Fielder's choice, 2B (4) to SS (6)
G63	Groundout, SS (6) to 1B (3)
GDP	Grounded into double play (same as DP but specifically on a ground ball)
HBP	Hit by pitch
HR	Home run (filled diamond, white text)
IBB	Intentional walk
IFF	Infield fly rule. Called on catchable pop-ups with runners on 1st and 2nd (or bases loaded) and fewer than 2 outs. Batter is automatically out whether or not the ball is caught.
K	Strikeout (swinging)
ꓘ	Strikeout (looking)
L7	Lineout to left field (7)
P4	Pop out to 2B (4)
PB	Passed ball (advance)
PO	Pickoff
POCS	Pickoff caught stealing
POE	Pickoff error
SB	Stolen base
SF9	Sacrifice fly to RF (9)
SFDP	Sac fly double play
SH13	Sac bunt, P (1) to 1B (3)
SHDP	Sac bunt double play
TP	Triple play. Three outs recorded on a single play.
WP	Wild pitch (advance)

Positions

1	Pitcher (P)
2	Catcher (C)
3	First base (1B)
4	Second base (2B)
5	Third base (3B)
6	Shortstop (SS)
7	Left field (LF)
8	Center field (CF)
9	Right field (RF)
10	Designated hitter (DH)

Stats

AB	At bats - used in AVG, SLG, BABIP
R	Runs scored
H	Hits - used in AVG, OBP, BABIP
BI	Batted in (RBI)

Totals

R	Runs
H	Hits
E	Errors
LOB	Left on base
S / P	Strikes / Pitches per inning

Pitch Colors

	Ball (B)
	Strike / Foul (C, S, F, T, W)
	In play (X) - bold
	Hit by pitch (H)
	ABS challenge

ABS

W	Challenge won (call overturned)
L	Challenge lost (call upheld)

Shortcuts

`D`	Switch to dark mode
`L`	Switch to light mode
`←`	Previous day (game picker)
`→`	Next day (game picker)

Diamond

	Single (1 hash mark on HP→1B)
	Double (2 hash marks on HP→1B)
	Triple (3 hash marks on HP→1B)
	Home run (filled diamond with white HR text)
	Thick line = runner advanced along base path
	RBI diamond (one per run batted in)
	Numbered out marker (1st, 2nd, 3rd out of inning)

Indicators

	Pitching change (square blocks on cell boundary). Includes the outgoing pitcher's strikes, pitches, and strikeouts.
	Pinch hitter (solid left line)
	Pinch runner (solid right line)
	Active batter cell (live games)

Batting

AVG: \(\displaystyle \frac{H}{AB}\); The most traditional measure of hitting ability; shows how often a batter gets a hit.
OBP: \(\displaystyle \frac{H + BB + HBP}{AB + BB + HBP + SF}\); Measures how often a batter reaches base, including walks and HBPs. Getting on base is the most important thing a batter can do.
SLG: \(\displaystyle \frac{1B + 2 \cdot 2B + 3 \cdot 3B + 4 \cdot HR}{AB}\); Measures raw power by weighting extra-base hits. A home run counts more than a single.
OPS: \(OBP + SLG\); Quick combined measure of OBP and SLG. Simple and widely used.
wOBA: \(\displaystyle \frac{0.696 \cdot uBB + 0.726 \cdot HBP + 0.883 \cdot 1B + 1.244 \cdot 2B + 1.569 \cdot 3B + 2.004 \cdot HR}{AB + BB - IBB + SF + HBP}\); Weights each offensive event by its actual run value using linear weights. More accurate than OPS because it properly values walks vs. doubles vs. home runs. Linear weights are updated annually by FanGraphs based on the run environment; the values shown here are from the 2024 season.
wRC+: \(\displaystyle \frac{\frac{wRAA}{PA} + \frac{R_{lg}}{PA_{lg}}}{\frac{wRC_{lg}}{PA_{lg}}} \times 100\); Park- and league-adjusted version of wOBA scaled to 100. A wRC+ of 120 means 20% better than league average. The gold standard for comparing hitters across eras and ballparks. Requires league-average data not available from the MLB Stats API; when FanGraphs data is integrated, wRC+ will be displayed alongside wOBA.
BABIP: \(\displaystyle \frac{H - HR}{AB - K - HR + SF}\); Batting average on balls in play. Helps identify luck vs. skill; extreme values tend to regress to the mean (~.300).
PA: \(AB + BB + HBP + SF + SH + CI\); Plate appearances; the denominator for rate stats. More meaningful than AB because it includes walks, HBPs, and sacrifice flies.

Pitching

ERA: \(\displaystyle \frac{ER}{IP} \times 9\); The traditional measure of pitching effectiveness. Shows earned runs allowed per 9 innings.
WHIP: \(\displaystyle \frac{BB + H}{IP}\); Measures how many baserunners a pitcher allows per inning. Lower is better; elite pitchers are under 1.00.
IP: \(\displaystyle \frac{\text{Outs Recorded}}{3}\); Innings pitched; measures workload. Each out is 1/3 of an inning (e.g., 6.2 = 6 and 2/3 innings).
K/9: \(\displaystyle \frac{K}{IP} \times 9\); Strikeouts per 9 innings. Measures a pitcher's ability to miss bats; higher is better.
BB/9: \(\displaystyle \frac{BB}{IP} \times 9\); Walks per 9 innings. Measures control; lower is better.
K/BB: \(\displaystyle \frac{K}{BB}\); Strikeout-to-walk ratio. Combines stuff and control into one number; elite pitchers are above 4.0.
FIP: \(\displaystyle \frac{13 \cdot HR + 3(BB + HBP) - 2 \cdot K}{IP} + C_{FIP}\); Fielding Independent Pitching. Estimates ERA based only on what pitchers control: strikeouts, walks, HBPs, and home runs.