<Tr> <Th_colspan="2"> Division I-A football seasons </Th> </Tr> <Tr> <Td_colspan="2"> ← 1996 1998 → </Td> </Tr> <P> The 1997 NCAA Division I-A football season, play of college football in the United States organized by the National Collegiate Athletic Association at the Division I-A level, began in late summer 1997 and culminated with the major bowl games in early January 1998 . The national championship was split for the third time in the 1990s . The Michigan Wolverines finished the season atop the AP Poll after completing a 12--0 campaign with a Big Ten Conference championship and a victory in the Rose Bowl over Washington State . The Nebraska Cornhuskers garnered the top ranking in the Coaches' Poll with a 13--0 record, a Big 12 Conference championship, and a win over Tennessee in the Orange Bowl . Michigan's Charles Woodson, who played primarily at cornerback, but also saw time on offense as a wide receiver and on special teams as a punt returner, won the Heisman Trophy, becoming the first primarily defensive player to win the award . The 1997 season was the third and final season in which the major bowl games were organized under the Bowl Alliance system . The Bowl Championship Series was instituted the following year . </P> <P> In Tom Osborne's last season as head coach, Nebraska took over the #1 ranking in the nation after defeating Texas Tech midway through the season . Three weeks later, despite winning at Missouri in an overtime game against an unranked Missouri football team, Nebraska slipped to a #2 ranking in the polls, as voters weren't impressed by the way the Cornhuskers won the game (a controversial kicked ball that was caught for the game - tying TD as time expired in regulation); Michigan moved ahead of Nebraska after its 34 - 8 victory over #3 ranked Penn State . </P>

Who won the national championship in college football in 1997
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