In baseball,
At Bats with Runners in Scoring Position (abbreviated
AB/RSP or
AB/RISP) is a statistic that measures the number of times a
batter comes to bat with runners in
scoring positions (in other words, on second or third base) and is charged with an official
at bat 
At bats with runners in scoring position is used to find a player's
Batting Average with Runners in Scoring Position.