I started tracking out-of-conferences games of BCS conference teams five years ago when the NCAA expanded the regular season to 12 games. The statistics show the following:
- Number of games against BCS conference teams is relatively constant.
- Number of games played against nonD1 teams is increasing.
- Number of games played against D1 teams is decreasing.
The table below displays cumulative statistics, while the graph below illustrates percent games against nonD1 teams yearly by conferences. Note: In 2007, the Big 12 value is the same as the SEC (thus hidden).