Another site had these:
General Internet acronyms
BTW β By the way
FWIW β For what itβs worth
HTBT β Had to be there
IMHO β In my humble opinion
IMO β In my opinion
LOL - Laughing Out Loud
OMG β Oh my god!
OP or O/Pβ Original post
OTOH - On the other hand
NFG - No Freakin' Good
PM - Private message
POV - Point of view
WOBW - waste of band width
YGTBSM β You've got to be ****tin' me!
YMMV β Your mileage may vary
Umpire related acronyms
1BC - First Base coach
1BLE β First base line extended
2M, 3M, 4M, or 6M β a 2, 3, 4, or 6 man crew (respectively)
3BC - Third Base coach
3BLE - Third base line extended
"A", "B", "C" - The A, B, or C position (respectively)
AC - Assistant Coach
AD - Athletic Director
B1 β Lead-off batter of the game in the 1st batting slot
B2, B3 . . . β 2nd batter, 3rd batter . . .
BI β Batterβs interference
BC - Base coach
BOO - Batting Out of Order
BR β Batter-runner
BRD - Baseball Rule Differences, by Carl Childress
BU - Base umpire (typically for a 2-man crew)
BW - Balk warning
CDP β Cooperstown Dream Park
CF β centerfield
CI β Catcherβs interference
C/NC - Catch / No-catch call
CP β Chest protector
CW β Crew Chief
CYA - Something you should always do
DB β dead ball
DBT - Dead ball territory
DDB β delayed dead ball
DC or DM β Defensive coach or manager
Dish β Home plate
DK3 - Dropped third strike
EJ - Eject, or ejection
F1 - Pitcher
F2 β Catcher
F3 β First baseman
F4 β Second baseman
F5 β Third baseman
F6 β Shortstop
F7 β Left fielder
F8 β Center fielder
F9 β Right fielder
F10 β Left out
F/F - Fair / foul call
FED β Federation Rules (High School) aka NFHS
FO - Force out
FYC - Something you should never do
HC - Head coach
HM - Home manager
HOK - Hands on knees
HP β Home plate
HPU β Home Plate umpire, aka U4 & PU
HSM - Hockey Style Mask
HT - Home team
HWUS - The Harry Wendelstedt School for Umpires, aka Harry's
IFF - Infield fly
IFR β Infield fly rule
IIITBTSB - well, you know
Indy β a professional independent baseball league
INT - Interference
JEA β Jim Evans Annotated rules manual,
JEAPU - Jim Evans Academy of Professional Umpiring, aka Jimmy's
JR or J/R - Jaksa/Roder Rules Interpretation manual
LBT - Live ball territory
LBT - Live Ball Territory
LF β left field
MC - Malicious Contact
MiLB β Minor League Baseball
MLB β Major League Baseball
MLBUM β MLB umpireβs manual
NFHS β High school rules, aka FED
OBR β Official Baseball Rules, aka PRO
OBS β Obstruction
OC or OM β Offensive coach or manager
OF β outfield
OOO β Overly officious official
OOP β Out of play
PBUC - The Professional Baseball Umpire Corp.
PU β Home plate umpire, aka U4 & HPU
RISP - Runner(s) in scoring position
RF β right field
S1 β Substitute for B1
S2 β Substitute for B2
SB β softball
Sitch β Situation
SUL - Super Ultra Light mask
TD - Tournament Director
TOP β Time of pitch
TOT β Time of throw
U1, U2, U3 β 1B, 2B, 3B base umpire (respectively)
U4 β Home plate umpire, aka PU & HPU
UIC β Umpire-in-Chief
UL - Ultra Light mask
VM - Visitor's manager
VT - Visiting team
Runners on base for OBR
R1 - Base runner at 1B at the TOP
R2 - Base runner at 2B at the TOP
R3 - Base runner at 3B at the TOP
Runners on base for FED
R1 - Base runner closest to HP at the TOP on any base
R2 - Base runner who is behind R1, on 1B or 2B at the TOP
R3 - Base runner at 1B at the TOP when bases are loaded
[Doesnβt this method suck? -RBS]
Traditional baseball abbreviations
AB - Times at Bat
AVG - Batting Average
BB - Walks (Bases on Balls)
BK - Balk
CG - Complete Game
CS - Caught Stealing
DO or DB β Double (2 base hit)
DP - Double Play
E - Error
ER - Earned Run
ERA - Earned Run Average
GP - Games Played
GP - Games Played
GSH - Grand Slam Home Run
H - Hit
HP or HBP - Hit by Pitch
HR - Home Run
IBB - Intentional Walk
K - Strikeout
LOB β Runner(s) Left on Base
OBP - On-Base Percentage
PB - Passed Ball
PK - Pickoff
PO - Putout
R or RS - Runs Scored
RBI - Runs Batted In
SB - Stolen Base
SB - Stolen Base
SF - Sacrifice Fly
SH - Sacrifice Hit (Bunt)
SLG - Slugging Percentage
SO or K - Strikeout
TP - Triple Play
TR β Triple (3 base hit)
WP - Wild Pitch