If I had to take a wild guess, it was probably Spring 2005, my senior year. We were an 8-seed (surprisingly, as we were a bubble to make the tourney) and then got ousted in one round.
Then we had four years of Courtney, so we couldn't have been unranked at all during that stretch. Then we had another year of Abi (and a Final Four!) so we couldn't have been unranked then. Then we had another year of D-Rob so we couldn't have been unranked then.
So the only other possibility was last year, but I don't think we were all that bad last year... not exceptional by previous Sherri team standards, but not bad.
Please note that OU is 33rd (8th among unranked teams) in the current coaches' poll, with wins against 4 teams that have more poll points, and another against a West Virginia team that Charlie Creme has rated as a 10-seed in his latest Bracketology.
While the Sooners are only 5-7 in the last 12 games, other factors are largely in play. Because of the challenge of those 12 games, OU's season strength of schedule rating has climbed to 11th nationally according to Jeff Sagarin, who is about as good as it gets when it comes to ranking teams.
Also, the Big 12 has crowned the last two national champions, and is the favorite for a 3rd in Baylor this year. For at least the 4th straight year the Big 12 is ranked as the nation's toughest conference. Not only that, but recent conference departees Colorado, Nebraska, and Texas A&M are mortal locks for invites to The Dance.
With those factors in play it would appear that regardless of OU's results before selection day, the Sooners will at least be in the field for the14th consecutive year.
But good or bad, the upcoming games can have a major impact on how far OU can advance once in the tournament. This team almost surely will be seeded 3, 4, 5, or 6 for the Big 12 tourney, so the Sooners are assured of 3-5 highly-regarded opponents prior to Selection Day.
If the Sooner are seeded 6 or 11 they have a 3-seed that may await them in the 2nd round. With a 7 or 10, that seed could be a 2, with 8 or 9 it's a top seed. While a 5 seed (or 12) isn't entirely impossible, a top seed would be a Sweet 16 brick wall.
What seed would YOU prefer? One more thing I know is that no team with a seed lower than 3 has ever been crowned champion, and the two 4-seeds that reached that final game both lost, and both to the only 3-seeds to win it all.