Reached on error - basically means that the runner got on base due to a fielding error and not by a safely hit ball.
Reached on Error
It means the % of fouls there are in a game
Left on base.
There is no standard stat with the abbreviation of FA.
"R" is for runs scored which means the number of times a player crosses home plate.
PIT is pitches thrown or pitch count.
ROE Reached On Error
an at bat
Assists i think
Either hits or homeruns