The term RBI and ERA refer to two important statistics in baseball. RBI stands for Runs Batted In, which is the number of runs a player has scored due to their own hitting. ERA stands for Earned Run Average, which is the average number of earned runs a pitcher gives up per nine innings. NOS is an acronym for Number of Strikes, which is the total number of strikes a pitcher throws in a game. STATS is an acronym for Statistics, which is the collection and analysis of data related to a particular event or activity.