752 captures
10 Dec 2015 - 26 Nov 2025
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About this capture
COLLECTED BY
Organization:
Internet Archive
Focused crawls are collections of frequently-updated webcrawl data from narrow (as opposed to broad or wide) web crawls, often focused on a single domain or subdomain.
Collection:
mlb.com
TIMESTAMPS
The Wayback Machine - https://web.archive.org/web/20210302111044/http://m.mlb.com/glossary
Glossary
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B
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E
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H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
A
Ace
Active Spin
Adjusted Earned Run Average (ERA+)
All-Star Ballot
Ambidextrous Pitchers
Appeal Plays
Appearance (App)
Arm Strength (ARM)
Around-the-horn
Assist (A)
At-bat (AB)
Automatic Runner
B
Balk
Balk (BK)
Ballpark Factor
Baltimore Chop
Barrel
Baseball Age (Seasonal Age)
Baserunner
Baserunners Per Nine Innings Pitched (MB/9)
Batted Ball Event (BBE)
Batter
Batter's Box
Batters Faced (BF)
Batting Average (AVG)
Batting Average on Balls in Play (BABIP)
Batting Out of Turn
Bench Coach
Bequeathed Runners (BQR)
Bequeathed Runners Scored (BQR-S)
Blown Save (BS)
Bolt
Bone Bruise
Bullpen Coach
Bursitis/Shoulder Bursitis
Bush League
Butcher Boy
C
Can of Corn
Catcher
Catcher Framing
Catcher Interference
Catch Probability
Caught Stealing (CS)
Caught Stealing Percentage (CS%)
Cellar
Center Fielder
Changeup (CH)
Chin Music
Closer
Club Option
Coach Interference
Collisions at Home Plate
Competitive Balance Draft Picks
Competitive Balance Tax
Complete Game (CG)
Contract Renewal
Contract Tendered
Curveball (CU)
Cutter (FC)
D
Dead Ball
Defensive Efficiency Ratio (DER)
Defensive Runs Saved (DRS)
Designated Hitter
Designated Hitter Rule
Designate for Assignment (DFA)
Distance Covered (DCOV)
Doctoring the Baseball
Double (2B)
Double Play (DP)
E
Earned Run (ER)
Earned Run Average (ERA)
Eephus (EP)
Error (E)
Exit Velocity (EV)
Expected Batting Average (xBA)
Expected ERA (xERA)
Expected Fielding Independent Pitching (xFIP)
Expected Slugging Percentage (xSLG)
Expected Weighted On-base Average (xwOBA)
Extension (EXT)
Extra-base Hit (XBH)
F
Fair Ball
Field Dimensions
Fielder Right of Way
Fielding Independent Pitching (FIP)
Fielding Percentage (FPCT)
File and Trial
First-base Coach
First Baseman
Fly-ball Rate (FB%)
Flyout
Force Play
Forearm Flexor Tendinitis
Forkball (FO)
Foul Ball
Foul Tip
Four-Seam Fastball (FA)
Free Agency
G
Game Score
Games Finished (GF)
Games Played (G)
Games Started (GS)
General Manager
Grand Slam (GSH)
Ground-ball Rate (GB%)
Ground Into Double Play (GIDP)
Groundout
Groundout-to-Airout Ratio (GO/AO)
Ground Rules
Guaranteed Contract
H
Hamstring Strain
Hard-hit Rate
Hit (H)
Hit-by-pitch (HBP)
Hit Distance (DST)
Hits Per Nine Innings (H/9)
Hitting Coach
Hold (HLD)
Home Run (HR)
Home Runs Per Nine Innings (HR/9)
Home Run To Fly Ball Rate (HR/FB)
Home To First
I
Incentive Clause
Infield Fly
Inherited Runner (IR)
Inherited Runs Allowed (IR-A)
Inherited Runs Allowed Percentage (IR-A%)
Innings Per Start (I/GS)
Innings Pitched (IP)
Innings Played (INN)
Intentional Walk (IBB)
Intercostal Strain
International Amateur Free Agency & Bonus Pool Money
International Free Agency -- Asia (Professional)
International Free Agency -- Cuba (Professional)
Isolated Power (ISO)
J
Japanese Posting System
JAWS
Jump
K
K
Knuckleball (KN)
Knuckle-curve (KC)
Korean Posting System
L
Late-inning Pressure Situation (LIPS)
Lat Strain
Launch Angle (LA)
Lead Distance (LEAD)
Left Fielder
Left On Base (LOB)
Leverage Index (LI)
Line-drive Rate (LD%)
Lisfranc Injury
Loss (L)
M
Maddux
Magic Number (MN)
Major League Baseball Logo
Manager
Manager Challenge
Marcel the Monkey Forecasting System (Marcel)
Mendoza Line
Minor League Options
Mound Visit
Mutual Option
N
Neighborhood Play
Non-guaranteed Contract
Non-roster Invite (NRI)
Non-tendered
No-trade Clause
Number of Pitches (NP)
O
Oblique Strain
Obstruction
Official Scorer
Oliver
On-base Percentage (OBP)
On-base Plus Slugging (OPS)
On-base Plus Slugging Plus (OPS+)
Opener
Ordinary Effort
Out (O)
Outfield Assist (OFA)
Outright Waivers
Outs Above Average (OAA)
P
Pace of Play
Painting the Black
Passed Ball (PB)
Perceived Velocity (PV)
Pickle
Pickoff (PK)
Pitches Per Inning Pitched (P/IP)
Pitches Per Plate Appearance (P/PA)
Pitches Per Start (P/GS)
Pitching Coach
Pitch Movement
Plantar Fasciitis
Plate Appearance (PA)
Plate Appearances Per Strikeout (PA/SO)
Player Empirical Comparison and Optimization Test Algorithm (PECOTA)
Player Option
Player to Be Named Later (PTBNL)
Pop Time (POP)
Pop-up Rate (PO%)
Postseason Roster Rules & Eligibility
Postseason Share
Projected Home Run Distance (HR-DIS)
Protested Game
Putaway Percentage
Putout (PO)
Pythagorean Winning Percentage
Q
Qualifying Offer
Quality Start (QS)
R
Range Factor (RF)
Reached On Error (ROE)
Regulation Game
Release Waivers
Relief Pitcher
Relief Win (RW)
Replay Review
Retention Bonus (Article XX(B) Free Agents)
Right Fielder
Rookie Eligibility
Rule 4 Draft
Rule 5 Draft
Run (R)
Run Differential
Runs Allowed Per Nine Innings Pitched (RA9)
Runs Batted In (RBI)
Runs Created (RC)
Run Support Per Nine Innings (RS/9)
S
Sacrifice Bunt (SH)
Sacrifice Fly (SF)
Salary Arbitration
Save (SV)
Save Opportunity (SVO)
Save Percentage (SV%)
Scorekeeping
Scouting Grades
Screwball (SC)
Second Baseman
Seeing-eye Single
Service Time
Set Position
Shifts
Shortstop
Shutout (SHO)
Single (1B)
Sinker (SI)
Skill-interactive Earned Run Average (SIERA)
Slash Line
Slider (SL)
Slide Rule
Slugging Percentage (SLG)
Southpaw
Spectator Interference
Spin Rate (SR)
Split Contract
Splitter (FS)
Sprint Speed (SS)
Starting Pitcher
Steamer
Stolen Base (SB)
Stolen-base Percentage (SB%)
Strikeout (SO, K)
Strikeout Rate (K%)
Strikeouts Per Nine Innings (K/9)
Strikeout-to-walk Ratio (K/BB)
Strike Zone
Substitutions
Super Two
Suspended Game
Sweet Spot
T
Texas Leaguer
The Hot Stove
Third-base Coach
Third Baseman
Thoracic Outlet Syndrome
Three-batter Minimum
Three True Outcomes
Tommy John Surgery
Tools of Ignorance
Total Bases (TB)
Total Chances (TC)
Trade Deadline
Trade Waivers & Aug. 31 'Deadline'
Triple (3B)
Triple Play (TP)
True Earned Run Average (tERA)
Two-Seam Fastball (FT)
Two-way Players
U
Ultimate Zone Rating (UZR)
Umpire
Unearned Run (UER)
V
Velocity (VELO)
Vesting Option
W
Walk (BB)
Walk-off
Walk-off (WO)
Walk Rate (BB%)
Walks And Hits Per Inning Pitched (WHIP)
Walks Per Nine Innings (BB/9)
Warmup Pitches
Weighted On-base Average (wOBA)
Weighted Runs Above Average (wRAA)
Weighted Runs Created Plus (wRC+)
Wild Pitch (WP)
Win (W)
Windup Position
Win Expectancy (WE)
Winning Percentage (WPCT)
Win Probability Added (WPA)
Wins Above Replacement (WAR)
X
Y
Z
Standard Stats
Defense
Assist (A)
Caught Stealing Percentage (CS%)
Double Play (DP)
Error (E)
Fielding Percentage (FPCT)
Innings Played (INN)
Out (O)
Outfield Assist (OFA)
Passed Ball (PB)
Putout (PO)
Total Chances (TC)
Triple Play (TP)
Offense
At-bat (AB)
Batting Average (AVG)
Caught Stealing (CS)
Double (2B)
Extra-base Hit (XBH)
Games Played (G)
Grand Slam (GSH)
Ground Into Double Play (GIDP)
Groundout-to-Airout Ratio (GO/AO)
Hit-by-pitch (HBP)
Hit (H)
Home Run (HR)
Intentional Walk (IBB)
Left On Base (LOB)
On-base Percentage (OBP)
On-base Plus Slugging (OPS)
Plate Appearance (PA)
Reached On Error (ROE)
Run (R)
Runs Batted In (RBI)
Sacrifice Bunt (SH)
Sacrifice Fly (SF)
Single (1B)
Slugging Percentage (SLG)
Stolen Base (SB)
Stolen-base Percentage (SB%)
Total Bases (TB)
Triple (3B)
Walk (BB)
Walk-off (WO)
Pitching
Appearance (App)
Balk (BK)
Batters Faced (BF)
Blown Save (BS)
Complete Game (CG)
Earned Run (ER)
Earned Run Average (ERA)
Flyout
Games Finished (GF)
Games Started (GS)
Groundout
Hold (HLD)
Inherited Runner (IR)
Innings Pitched (IP)
Loss (L)
Number of Pitches (NP)
Pickoff (PK)
Quality Start (QS)
Relief Win (RW)
Save (SV)
Save Opportunity (SVO)
Save Percentage (SV%)
Shutout (SHO)
Strikeout (SO, K)
Unearned Run (UER)
Walks And Hits Per Inning Pitched (WHIP)
Wild Pitch (WP)
Win (W)
Winning Percentage (WPCT)
Team
Run Differential
Advanced Stats
Defense
Defensive Efficiency Ratio (DER)
Defensive Runs Saved (DRS)
Range Factor (RF)
Ultimate Zone Rating (UZR)
Offense
Batting Average on Balls in Play (BABIP)
Isolated Power (ISO)
Late-inning Pressure Situation (LIPS)
On-base Plus Slugging Plus (OPS+)
Pitches Per Plate Appearance (P/PA)
Plate Appearances Per Strikeout (PA/SO)
Runs Created (RC)
Weighted Runs Above Average (wRAA)
Weighted On-base Average (wOBA)
Weighted Runs Created Plus (wRC+)
Win Probability Added (WPA)
Wins Above Replacement (WAR)
Pitching
Adjusted Earned Run Average (ERA+)
Baserunners Per Nine Innings Pitched (MB/9)
Bequeathed Runners (BQR)
Bequeathed Runners Scored (BQR-S)
Expected Fielding Independent Pitching (xFIP)
Fielding Independent Pitching (FIP)
Fly-ball Rate (FB%)
Game Score
Ground-ball Rate (GB%)
Hits Per Nine Innings (H/9)
Home Runs Per Nine Innings (HR/9)
Home Run To Fly Ball Rate (HR/FB)
Inherited Runs Allowed (IR-A)
Inherited Runs Allowed Percentage (IR-A%)
Innings Per Start (I/GS)
Leverage Index (LI)
Line-drive Rate (LD%)
Pitches Per Inning Pitched (P/IP)
Pitches Per Start (P/GS)
Pop-up Rate (PO%)
Run Support Per Nine Innings (RS/9)
Runs Allowed Per Nine Innings Pitched (RA9)
Skill-interactive Earned Run Average (SIERA)
Strikeout Rate (K%)
Strikeouts Per Nine Innings (K/9)
Strikeout-to-walk Ratio (K/BB)
True Earned Run Average (tERA)
Walks Per Nine Innings (BB/9)
Walk Rate (BB%)
Team
Ballpark Factor
Magic Number (MN)
Pythagorean Winning Percentage
Win Expectancy (WE)
Statcast
Defense
Arm Strength (ARM)
Catcher Framing
Catch Probability
Distance Covered (DCOV)
Jump
Outs Above Average (OAA)
Pop Time (POP)
Shifts
Offense
90-foot Running Splits
Barrel
Batted Ball Event (BBE)
Bolt
Exit Velocity (EV)
Expected Batting Average (xBA)
Expected Slugging Percentage (xSLG)
Expected Weighted On-base Average (xwOBA)
Hard-hit Rate
Hit Distance (DST)
Home To First
Launch Angle (LA)
Lead Distance (LEAD)
Projected Home Run Distance (HR-DIS)
Sprint Speed (SS)
Sweet Spot
Pitching
Active Spin
Expected ERA (xERA)
Extension (EXT)
Perceived Velocity (PV)
Pitch Movement
Putaway Percentage
Spin Rate (SR)
Velocity (VELO)
Transactions
Transactions
10-and-5 Rights
26-man Roster
27th Man
40-man Roster
Club Option
Competitive Balance Draft Picks
Competitive Balance Tax
Contract Renewal
Contract Tendered
Designate for Assignment (DFA)
Free Agency
Guaranteed Contract
Incentive Clause
International Amateur Free Agency & Bonus Pool Money
International Free Agency -- Asia (Professional)
International Free Agency -- Cuba (Professional)
Japanese Posting System
Korean Posting System
Minor League Options
Mutual Option
Non-guaranteed Contract
Non-roster Invite (NRI)
Non-tendered
No-trade Clause
Outright Waivers
Player Option
Player to Be Named Later (PTBNL)
Postseason Roster Rules & Eligibility
Qualifying Offer
Release Waivers
Retention Bonus (Article XX(B) Free Agents)
Rule 4 Draft
Rule 5 Draft
Salary Arbitration
Service Time
Split Contract
Super Two
Trade Deadline
Trade Waivers & Aug. 31 'Deadline'
Vesting Option
Pitch Types
Pitching
Changeup (CH)
Curveball (CU)
Cutter (FC)
Eephus (EP)
Forkball (FO)
Four-Seam Fastball (FA)
Knuckleball (KN)
Knuckle-curve (KC)
Screwball (SC)
Sinker (SI)
Slider (SL)
Splitter (FS)
Two-Seam Fastball (FT)
Projection Systems
Projections
Marcel the Monkey Forecasting System (Marcel)
Oliver
Player Empirical Comparison and Optimization Test Algorithm (PECOTA)
Steamer
sZymborski Projection System (ZiPS)
Positions
Positions
Baserunner
Batter
Bench Coach
Bullpen Coach
Catcher
Center Fielder
Closer
Designated Hitter
First-base Coach
First Baseman
General Manager
Hitting Coach
Left Fielder
Manager
Pitching Coach
Relief Pitcher
Right Fielder
Second Baseman
Shortstop
Starting Pitcher
Third-base Coach
Third Baseman
Rules
Rules
Ambidextrous Pitchers
Appeal Plays
Automatic Runner
Balk
Batter's Box
Batting Out of Turn
Catcher Interference
Coach Interference
Collisions at Home Plate
Dead Ball
Designated Hitter Rule
Doctoring the Baseball
Fair Ball
Field Dimensions
Fielder Right of Way
Force Play
Foul Ball
Foul Tip
Ground Rules
Infield Fly
Manager Challenge
Mound Visit
Neighborhood Play
Obstruction
Official Scorer
Ordinary Effort
Pace of Play
Protested Game
Regulation Game
Replay Review
Rookie Eligibility
Slide Rule
Spectator Interference
Set Position
Strike Zone
Substitutions
Suspended Game
Three-batter Minimum
Two-way Players
Umpire
Warmup Pitches
Windup Position
Injuries
Injuries
7-day Injured List
10-day Injured List
15-day Injured List
60-day Injured List
Bone Bruise
Bursitis/Shoulder Bursitis
Forearm Flexor Tendinitis
Hamstring Strain
Intercostal Strain
Lat Strain
Lisfranc Injury
Plantar Fasciitis
Oblique Strain
Thoracic Outlet Syndrome
Tommy John Surgery
Idioms
Idioms
Ace
Around-the-horn
Baltimore Chop
Bush League
Butcher Boy
Can of Corn
Cellar
Chin Music
K
Maddux
Mendoza Line
Opener
Painting the Black
Pickle
Seeing-eye Single
Southpaw
Texas Leaguer
Tools of Ignorance
The Hot Stove
Three True Outcomes
Walk-off
Transactions
File and Trial
Miscellaneous
Miscellaneous
All-Star Ballot
Baseball Age (Seasonal Age)
JAWS
Major League Baseball Logo
Postseason Share
Scorekeeping
Scouting Grades
Slash Line
