Originally Posted by
NOPD
hahaha I know what that stands for, but don't know what ERA stands for

Earned Run Average. Lower the better. This is the main way to judge a pitcher's effectiveness. Strikeouts don't matter much if you're tossing plenty of home run balls.
Originally Posted by
RicoD
.
Werd

h:
I still don't know what RBI stands for

h:
Run Batted In. Higher the better. This is the main way to judge a batters effectiveness. High RBI (when compared to their peers) means that the player is an offensive force. Often, a player with a high RBI count is treated differently by the opposing team. Out of 6 pitches, easily, there's maybe only one good one to hit.