A fourth-quarter comeback for the ages took place Saturday in Memorial Stadium on the University of Kansas campus in front of plenty of empty seats.

The stadium was far from full to start the day and many headed for the exits at the beginning of the fourth quarter with Colorado winning 45-17. The Jayhawks rallied to win 52-45.

The Buffs will probably encounter the same kind of atmosphere at Folsom Field the next two weeks as they complete the 2010 home schedule with their final two Big 12 home games in history.

CU hosts Iowa State this week and Kansas State on Nov. 20.

Officials are prepared for the possibility of hosting the two smallest crowds to see a Big 12 Conference game at Folsom Field.

Colorado has done well to keep as many fans in the stadium as it has through the past five years of losing, but selling tickets to see mediocre football in November in Boulder always has been a challenge.

The smallest crowd ever to see a Big 12 game at Folsom Field came on Nov. 4, 2006, when 42,696 showed up to see Kansas State take on the Buffs. The second smallest crowd for a Big 12 game came one week later that season for a game that featured CU hosting Iowa State, the same matchup as this week. Only 43,056 saw that game.

Could CU be on the verge of hosting its first sub-40,000 attendance conference game in Big 12 play?

If it happens, it would be the first time CU has failed to attract at least 40,000 fans for a conference game since the regular season finale in 1988 against Kansas State when just 32,617 attended.

Unless CU is able to do something to sell more tickets this week and next, the small crowds for the final two home games will be another hit to the athletic department budget. The department is already managing costs associated with losing revenue from the Big 12 this year because of its move to the Pac-12.