Comcast covers Chicago. There are tons of Big 10 alum in Chicago.
Columbus is not a comcast market. Columbus is something like 80/20 cable/sat. The providers are TWC in the city, Insight in the burbs and WoW is available to most folks as well. ATT U-VERSE fiber is being put down in parts of the suburbs but the service is not yet available. There has been no local advertising for the service and no buzz at all so far.
Since I am one of the Big Ten alums in Chicago, I can confidently tell you that no one in this city gives a rats ass about Big Ten football. They love minor league football here, I think they call them Da Bears. Don't look at the small picture of this year's football season, but next year's when U-verse is all over the Midwest including Chicago, Columbus, Detroit, Milwaukee, Indianapolis, etc. Comcast won't have a leg to stand on.