The first Bowl Championship Series (BCS) rankings of the 2009 season debuted on Sunday and four Big Ten teams appeared among the top 25. Undefeated Iowa led the conference at No. 6 in the opening BCS poll, the Hawkeyes first BCS rating since Oct. 15, 2006, and the highest ranking for the school since appearing fifth in the last three polls of the 2002 campaign (Nov. 25, Dec. 2, Dec. 8). Also appearing in the initial BCS rankings are No. 13 Penn State, No. 19 Ohio State and No. 21 Wisconsin. The Buckeyes have appeared in at least one BCS poll in 10 of the system's 12 years, making them one of only five programs be ranked by the BCS in 10 or more years, a group that includes Florida, Michigan, Texas and Virginia Tech. The Nittany Lions have now been rated by the BCS in eight of 12 years, one of only 13 programs to accomplish that feat. The Badgers return to the BCS poll for the first time since the 2007 season and have now made an appearance in the BCS rankings in five of the last six seasons.