soccerchamp76

BB = Bases on balls (i.e. walk)
LOB = Left on Base (bases loaded, 2 outs, batter strikes out--3 LOB)
Average = Hits/At-bats
At-bats are different than PA (Plate Appearance), as walks, HBP (Hit by Pitch) do not factor into At-bats.
Slugging Percentage = number of total bases divided by at-bats (single=1, double=2, triple=3, homerun=4)
OBP (On-base percentage) = Hits+BB+HBP/AB+BB+HBP+SF (sacrifice flies)
ERA = Earned runs/Innings Pitched times 9


Note about errors: Errors count against you in Average and OBP. Even though you reach base, it is due to a fielder's error and counts against you (I.E. you get on base 4 times in a game because of 4 errors, you are 0-4 for the day)
Errors do not count against the pitcher in terms of earned runs. If a run scores because of an error, the run does not count. This can be tricky sometimes, but as a result a pitcher can give up 10 runs in one inning, all unearned, due to one error. For example: Roger Clemens (hypothetical example) strikes out the first two batters but the next batter reaches on an error by the first basemen. Next batter singles, etc etc, 10 runs score after 2 outs. NONE of the runs are earned as the inning would have been over for not the error. Errors by the pitcher are no different.

Any more help needed?

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Brian Griffin: Ah, if my memory serves me, this is the physics department.
Chris Griffin: That would explain all the gravity.