I think O-Rank is some sort of composite rank that covers the last 2 or 3 years, as well as yahoo's "fantasy expert" rankings. A guy like David Wright is ranked 87 despite minimal experience because of those expert rankings. On the other hand, Chipper is ranked 44 because of his good performance over the last few years (despite last years relatively weak #'s).
Rank is a purely statistical ranking based only on last years performance (that is, until this season starts).
Bluto: Over? Did you say over? NOTHING is over until WE decide it is! Was it over when the Germans bombed Pearl Harbor? HELL, NO!
Boon: Forget it, he's rolling.