Mendoza line: Named after Mario Mendoza, is a batting average of .200. Baseball Abbreviations. AANHPI. OFA = Outfield Assist An outfielder records an assist when he throws the ball into the infield and an out is recorded as a result. xFIP = Expected Fielding Independent Pitching An estimate of a pitchers ERA based on strikeouts, walks/HBP, and home runs allowed, assuming league average results on balls in play. AO - Fly Outs (Air) BA or AVG - Batting average BB - Bases on Balls (Walks) BABIP - Batting Average on Balls in Play BB/K - Walks to Strikeouts BR or BsR - Base Runs EQA - Equivalent Average GIDP - Ground Into Double Plays GO/AO - Ground Balls to Fly Balls GS or GRSL - Grand Slams H - Hits HBP - Hit By Pitch HRR - Home Run Ratio HR - Home Runs Flashing the leather: When a fielder makes a terrific play. HHB = Hard hit balls = Total line drives and hard ground balls. WHIP = Walks and hits per innings pitched The average number of hits and walks allowed by the pitcher per inning. HBP: Hits-by-pitch or hit batters when a pitched ball hits the batter and the batter walks to first base. PA Plate Appearances: The number of completed turns at the plate a player has taken throughout the season. under the age of 21. L = Loss A pitcher is given a loss if they were pitching when the opposing team had and kept the lead, and went on to win that game. HLD = HOLD A hold occurs when a relief pitcher enters the game in a save situation and maintains his teams lead for the next relief pitcher, while recording at least one out. This makes them vulnerable to power hitters who can easily knock a high ball over the wall. Thanks for stopping by ~Jeremy, just got back online.Thanks for all the stat info.Highly informative and as some one else said very well presented. When comparing pitchers across leagues, note that ERA values in the NL tend to be significantly lower thanks to lack of designated hitters in the batting lineup. The formula for caught balls is 1.00 - catch probability = X. CG = Complete game A complete game is when a pitcher is the only player to pitch for their team during an entire game. The list of 1.9k Baseball acronyms and abbreviations (April 2023): 50 Categories Sort. Cleanup batter: Refers to the fourth batter in the batting lineup. RPF: Relief failures the number of times a game ends in a loss where the pitcher is brought in as a relief pitcher. WEAK% = % of batted balls weakly hit (fly balls and ground balls). Lumber: A baseball bat that is made of wood. On-base Plus Slugging (OPS) | Glossary | MLB.com IBB = Intentional Walks Number of intentional walks issued by the pitcher. This includes batters who reach base via hits, walks, and hit-by-pitches. Thanks for stopping by and see you next time ~Jeremy, P.S. Starters are credited a QS when they pitch at least six innings and allow three or fewer earned runs. Both wins and losses are not particularly accurate indicators of a pitchers ability. E: Error when a fielder fails to convert an out that he otherwise should have. H Hits: The total number of times a player hits the ball and reaches a base without fielder error or sacrifice. Crackerjack: Refers to a skilled player with a lot of power. 2023. If the bases happen to be loaded at the time, the batter is also credited with a run batted in. W = Win A pitcher is awarded a win if they are pitching when their team had the lead after 5 completed innings and ultimately went on to win the game. Terms of Use OBP = On base percentage A players on base percentage is how many times they reach base safely via a hit, walk, or hit by pitch divided by number of at bats, plus walks, plus hit by pitch, plus sacrifice flies. ER = Earned run Earned runs are the total number of runs allowed by a pitcher that were not the result of a defensive error or a passed ball by the catcher. How batters make it to a base Getting on base is a batter's primary task, and the first step to scoring runs, which is the way to win and lose games. Basic Baseball Stats Abbreviations: An Essential Glossary