BsRn stands for Baserunning in SABRmetric circles. It's a measure of a player's relative value to his team as a baserunner. I've never seen it on the back of a baseball card.
team
Position
caught stealing
Batters Faced.
Stolen bases.
Offensive Errors
It means Games Behind.
it means afternoon games
Hits Allowed.
A pop fly put to the third baseman.
its like 6 up 6 down