Hmmm lets see here:

MLB: Cleveland Indians
NFL: Cleveland Browns and San Francisco 49ers
NBA: Not a huge NBA fan, I root for the Cleveland Cavs or Memphis Grizzlies
NCAAF: Ohio State Buckeyes!! (This is my favorite sport by far)
NCAAB: Memphis U
Boxing: I liked the Klitchkoe brothers, but I think one just retired
UFC is good too
I haven't lived in the south long enough to get into NASCAR :p