There are six college football teams that have started the 2015 season with perfect 6-0 records, and three of them are in the Big Ten Conference.

Ohio State, Michigan State and Iowa are already bowl eligible and have yet to lose a game this season. There are several other undefeated teams with five wins, but only the Buckeyes, Spartans, Hawkeyes, TCU, Florida and Oklahoma State already know they will be playing in the postseason.

The early success sparked a huge increase in viewership for the Big Ten Network. The network saw its highest viewership in its history Saturday. For the day, BTN earned a 2.04 rating in the network’s 12 metered markets, and topped its previous record set in November 2014 by 30 percent.

BTN’s games were the highest rated across all cable networks in Baltimore, Chicago, Columbus, Cleveland, Dayton, Detroit and Washington, D.C. and second in Indianapolis, Milwaukee, New York and Philadelphia according to Nielsen overnight ratings and data from the ESPN networks and Fox Sports 1.

“The heightened interest in Big Ten football around the country has generated increased enthusiasm for the conference, the schools and BTN,” said BTN President Mark Silverman. “The results from Saturday’s games have exceeded even our most optimistic expectations.”

Ohio State's win over Maryland was the most-watched game on the network Saturday, followed by Michigan-Northwestern and Michigan State-Rutgers.

BTN’s social platforms also saw record-breaking traffic, including BTN.com, Facebook, Twitter, etc.

This time last season it seemed most folks were counting the Big Ten out and talking about what a down season the conference was having.

What a difference a year makes.