* 1B — Single: hits on which the batter reaches first base safely without the contribution of a fielding error.

* 2B — Double: hits on which the batter reaches second base safely without the contribution of a fielding error.

* 3B — Triple: hits on which the batter reaches third base safely without the contribution of a fielding error.

* BABIP — Batting average on balls in play: frequency at which a batter reaches a base after putting the ball in the field of play.

* The batter reaches first base on a hit

* The batter reaches first base on an error

* A batter reaches base on an error ( including catcher's interference ), and later scores a run in that inning by any means.

* A batter reaches first base on a passed ball ( but not a wild pitch ) and subsequently scores by any means.

In the first two cases above, " on an error " includes situations where the batter makes a clean hit ( or walks, is hit by pitch, reaches base on a fielder's choice in which no out is made, or reaches base on a wild pitch on a called or swinging third strike ), but should have been out earlier in his at bat on a foul fly ball which was dropped by a fielder for an error.

In baseball statistics, a hit ( denoted by H ), also called a base hit, is credited to a batter when the batter safely reaches first base after hitting the ball into fair territory, without the benefit of an error or a fielder's choice.

To achieve a hit, the batter must reach first base before any fielder can either tag him with the ball, throw to another player protecting the base before the batter reaches it, or tag first base while carrying the ball.

The hit is scored the moment the batter reaches first base safely-if the runner is put out while attempting a double or triple on the same play, he still gets credit for the hit.

If a batter reaches first base because of offensive interference by a preceding runner ( including if a preceding runner is hit by a batted ball ), he is also credited with a hit.

:( 1 ) the batter reaches first base ( or any succeeding base ) safely on a fair ball that settles on the ground, that touches a fence before being touched by a fielder or that clears a fence ;

:( 2 ) the batter reaches first base safely on a fair ball hit with such force, or so slowly, that any fielder attempting to make a play with the ball has no opportunity to do so ;

:( 3 ) the batter reaches first base safely on a fair ball that takes an unnatural bounce so that a fielder cannot handle it with ordinary effort, or that touches the pitcher's plate or any base ( including home plate ) before being touched by a fielder and bounces so that a fielder cannot handle the ball with ordinary effort ;

:( 4 ) the batter reaches first base safely on a fair ball that has not been touched by a fielder and that is in fair territory when the ball reaches the outfield, unless in the scorer's judgment the ball could have been handled with ordinary effort ;

In baseball statistics, on-base percentage ( OBP ; sometimes referred to as on-base average / OBA, as the statistic is rarely presented as a true percentage ) is a measure of how often a batter reaches base for any reason other than a fielding error, fielder's choice, dropped / uncaught third strike, fielder's obstruction, or catcher's interference ( the latter two are ignored as either times-on-base ( TOB ) or plate appearances in calculating OBP ).

In a perfect game, no batter reaches any base during the course of the game.

There is also the " inside-the-park " home run, increasingly rare in modern baseball, where the batter reaches home safely while the baseball is in play on the field.

Catcher must catch the third strike or batter may attempt to run to first base.

* BB — Base on balls ( also called a " walk "): times pitching four balls, allowing the batter to take first base

* HB — Hit batsman: times hit a batter with pitch, allowing runner to advance to first base

If the batter gets a base hit, which would have scored the runner anyway, the run now becomes earned.

Neither the use of a pinch-runner to replace a baserunner who represents an unearned run nor the use of a pinch-hitter to continue the turn at bat of a batter who would be out except for an error transforms a run scored by such a person or his successors on base from an unearned run to an earned run.

A base on balls ( BB ) is credited to a batter and against a pitcher in baseball statistics when a batter receives four pitches that the umpire calls balls.

Receiving a base on balls does not count as a hit or an at bat for a batter but does count as a time on base and a plate appearance.

A hit by pitch is not counted statistically as a walk, though the effect is mostly the same, with the batter receiving a free pass to first base.

* HR — Home runs: hits on which the batter successfully touched all four bases, without the contribution of a fielding error.

* RBI — Run batted in: number of runners who score due to a batters ' action, except when batter grounded into double play or reached on an error

* FPOM — First Pitch Outs Made: Number of outs earned where the batter ground or flies out on the first pitch.

In this case, the batter will come to bat again in the next inning, though he now has no balls or strikes on him.

* A batter or runner advances one or more bases on an error or passed ball and scores on a play that would otherwise not have provided the opportunity to score.

A batter who reaches first base safely as the result of a fielder's choice is not credited with a hit or a time on base ; however, his turn at the plate is recorded as an at bat and plate appearance.

A batter who reaches first base safely but advances on the same play as the result of fielder's choice is credited with a hit for the number of bases he would have reached safely with no other runners on base, and is said to have taken the additional base ( s ) on the throw.

In baseball, a double is the act of a batter striking the pitched ball and safely reaching second base without being called out by the umpire, without the benefit of a fielder's misplay ( see error ) or another runner being put out on a fielder's choice.

In baseball, a triple is the act of a batter safely reaching third base after hitting the ball, with neither the benefit of a fielder's misplay ( see error ) nor another runner being put out on a fielder's choice.

The batter is almost always sacrificed ( and to a certain degree that is the intent of the batter ) but sometimes reaches base due to an error or fielder's choice.

Should a run score on a play in which a batter hits into either a force double play or a reverse force double play, the official scorer may deny the batter credit for an RBI, although the batter always gets credit for an RBI on a one-out groundout or a fielder's choice play in which a baserunner scores.

An error does not count as a hit but still counts as an at bat for the batter unless, in the scorer's judgment, the batter would have reached first base safely but one or more of the additional base ( s ) reached was the result of the fielder's mistake.

However, if a batter is judged to have reached base solely because of a fielder's mistake, it is scored as a " hit on error ," and treated the same as if a batter was put out, hence lowering his batting average.

If a play should have resulted in a fielder's choice with a runner being put out and the batter reaching base safely but the runner is safe due to an error, the play will be scored as a fielder's choice, with no hit being awarded to the batter and an error charged against the fielder.