It would be way sweet if the major sports had their own area. They should be labeled just as ocn posted above. Most of the major sport have both professional and college levels with a following. Dividing pro from amateur is too watered down in my opinion. The "other" sport area is needed for there are many sports and followers. Tennis, Golf, Olympics could have an area of their own. It is all subjective to the sport's fan. I follow the three additional sports mentioned for I'm a fan. However, I think they belong in the "Other" area.
To avoid the headache of filtering and sorting the different sports, a one inclusive header (Sports) is what we had and it worked for the most part. Active threads kept the current sport towards to top.