Living out here in DC, I attended the Nats game last night, which allowed me to see an old, aggressive, friend, Mr. Christian "Doesn't Walk" Guzman.  And lest you think I'm joking, Guzman's OBP is actually lower than his batting average.  I don't know how he does it, but his batting average was .294 this morning, and his OBP was .288.

I mean, I wasn't expecting Guzman to have a great OBP or anything, but one lower than his batting average?  How is that even possible?  I figured this would the place to ask--isn't OBP just (hits+walks)/plate appearances?