Double

A double is the easiest extra base hit to hit. You must get on to second base to get a double. The runner is able to score from third, second and even first at some times.

Ground Rule Double

A ground rule double is hit when a ball is hit in fair territory and bounces into the seats even if the seats are in foul territory. If you are on third or second base, you will score, if you are at first, you will go to third base and if you were the one to hit the ground rule double, then you go to second base.

The most career doubles hit was at 792 by Tris Speaker who hit a lot of doubles. The most in a singular season is 67 doubles by the player, Earl Webb in 1931.