Run batted in

Runs batted in or RBI is a statistic used in baseball and softball to credit a batter when the outcome of his at bat results in a run being scored, except in certain situations such as when an error is made on the play.

Major League Baseball Rules

The official rulebook of Major League Baseball states in Rule 10.04:

(a) The official scorer shall credit the batter with a run batted in for every run that scores:

(1) unaided by an error and as part of a play begun by the batter's safe hit (including the batter's home run), sacrifice bunt, sacrifice fly, infield out or fielder's choice, unless Rule 10.04(b) applies;

(2) by reason of the batter becoming a runner with the bases full (because of a base on balls, an award of first base for being touched by a pitched ball or for interference or obstruction); or

(3) when, before two are out, an error is made on a play on which a runner from third base ordinarily would score.

(b) The official scorer shall not credit a run batted in

(1) when the batter grounds into a force double play or a reverse-force double play; or

(2) when a fielder is charged with an error because the fielder muffs a throw at first base that would have completed a force double play.

(c) The official scorer's judgment must determine whether a run batted in shall be credited for a run that scores when a fielder holds the ball or throws to a wrong base. Ordinarily, if the runner keeps going, the official scorer should credit a run batted in; if the runner stops and takes off again when the runner notices the misplay, the official scorer should credit the run as scored on a fielder's choice.