To recap the 1990 season:
Colorado started the 1990 season ranked #5 in the polls. Miami, Notre Dame, Auburn, and Florida State were all ranked ahead of CU. This was an unusual poll for Colorado. Colorado played Tennessee on August 26, 1990. The first polls were not released until September 4, 1990. So by the time of that first poll, Colorado had already played (and tied) one game.
Games of September 1, 1990: Colorado was actually "off" this week, because they had played Tennessee to a 31-31 a week prior. By the time the polls came out after the first full week of games, even though the Buffs did not play at all, they fell to #6 in the polls.
Games of September 8, 1990: Colorado beat Stanford 17-14 on a late CU touchdown. The pollsters remained unimpressed - and when the polls were released the following Tuesday, Colorado had fallen to #9.
Games of September 15, 1990: Colorado lost to Illinois 23-22. The next poll dropped the Buffs all the way to #20.
Games of September 22, 1990: #20 Colorado beat #22 Texas 29-22. However, when the polls were released a few days later, the Buffs were still ranked #20. The top of the polls after the week of September 22, 1990 were Notre Dame, Florida State, Auburn, BYU, and Tennessee. Virginia was ranked #7.
Games of September 29, 1990: #20 Colorado beat #12 Washington 20-14. Auburn and Tennessee tied. The next week, the top five teams in the polls were Notre Dame, Florida State, Michigan, Virginia, and Auburn. Colorado had moved up to #12.
Games of October 6, 1990: #12 Colorado beat Mizzou 33-31. This was when college football went nuts. #1 Notre Dame lost to Stanford. #2 Florida State lost to #9 Miami. Michigan became the new #1 in the polls the following week. After the 5th down fiasco, the polls dropped the Buffs down two spots to #14.
Games of October 13, 1990: #14 Colorado beat Iowa State 28-12. #1 Michigan lost to Michigan State. Oklahoma - which had moved up to #4 in the poll the week before, lost to Texas in the Cotton Bowl. The top five in the next poll was #1 Virginia, #2 Miami, #3 Tennessee, #4 Nebraska, #5 Auburn.
Games of October 20, 1990: Colorado beat Kansas 42-10. This week, 10 of the top 25 lost. #2 Miami lost to #6 Notre Dame. #3 Tennessee lost to Alabama. #7 Florida State lost to #5 Auburn. The next poll was #1 Virginia, #2 Auburn, #3 Notre dame, #4 Nebraska, #5 Auburn.
Games of October 27, 1990: Colorado beat Oklahoma 32-23. #2 Auburn barely beat Mississippi State. The next poll was #1 Virginia, #2 Notre Dame, #3 Nebraska, #4 Auburn, #5 Illinois.
Games of November 3, 1990: #9 Colorado beat #3 Nebraska 27-12. #1 Virginia lost to #16 Georgia Tech. #4 Auburn was routed by #15 Florida. The rankings at the end of the 1st week of November were #1 Notre Dame, #2 Washington, #3 Houston, and #4 Colorado.
Games of November 10, 1990: #4 Colorado beat Oklahoma State 41-22. #1 Notre Dame beat Tennesse, and was rewarded with an invitation to the 1991 Orange Bowl game. #2 Washington fell to UCLA, and #3 Houston lost to Texas. The polls the next week read #1 Notre Dame, #2 Colorado.
Games of November 17, 1990: #2 Colorado beat Kansas State 64-3. #1 Notre Dame lost to Penn State. Colorado moved up to #1 in the next poll - their first time on top of the polls all year. The top five read #1 Colorado, #2 Miami, #3 Georgia Tech, #4 BYU, #5 Florida.
Games of November 23, 1990: #1 Colorado did not play. Their season was over. #2 Miami did play - they throttled Syracuse 33-7. #3 Georgia Tech was off. The pollsters did a peculiar thing - and moved Georgia Tech, which did not play, up to #2, over Miami, which beat the snot out of Syracuse. (Not the only time the pollsters were peculiar that season)
Games of December 1, 1990: #1 Colorado did not play. #2 Georgia Tech beat Georgia. #3 Miami barely beat San Diego State.
Bowl games: Because of conference affiliations, there was no way for the top teams to play one another. #1 Colorado was to play in the Orange Bowl. #2 Georgia Tech, as ACC champion, was to play in the Citrus Bowl. Miami was an independent school at that time, and could have gone to play Colorado which would have given the bowl a #1 v. #3 matchup - but the Orange Bowl had extended an invitation to Notre Dame before Notre Dame lost their game to Penn State way back on November 17. #3 Miami therefore went the Cotton Bowl.