Excerpts from Major League Baseball rule 10.04, Runs Batted In (RBI):

a. 2. Do not credit a run batted in when a fielder is charged with an error because he muffs a throw at first base which would have completed a force double play.

b. Do not credit a run batted in when the batter grounds into a force double play or a reverse force double play.

c. Do not credit a run batted in when a fielder is charged with an error because he muffs a throw at first base which would have completed a force double play.

d. Scorer's judgment must determine whether a run batted in shall be credited for a run which scores when a fielder holds the ball, or throws to a wrong base. Ordinarily, if the runner keeps going, credit a run batted in; if the runner stops and takes off again when he notices the misplay, credit the run as scored on a fielder's choice.