What does A means in baseball fielding?

Answer 1

"A" is the abbreviation for an "Assist", a scoring record of a fielder who throws out a runner, such as a ground ball to short and the batter is thrown out at first, the shortstop is credited with an Assist. Two "Assist" may sometimes be credited, such as when the ball is hit to the outfield, the outfielder may throw to another fielder who then throws the baserunner out. In that case both players involved in throwing out the runner is credited with an "Assist".

Answer 2

Assists

Answer 3

assists