When Colorado joined the Pac-12 Conference three years ago there was considerable time spent wondering which school would become the Buffs biggest rival.
We have our answer.
Yep, it's probably going to be more than one school.
In the old days it was easy. It was Nebraska hands down. Former CU football coach Bill McCartney made it so in the late 1980s after years of being pushed around on the football field by the Huskers.
And since football has been king around here for so long, the disdain for Big Red took root across the spectrum of sports at CU.
Things aren't so cut-and-dry when it comes to cheering for the Buffs anymore. Football just isn't good enough right now to claim to be rivals with any other program in the conference and it's definitely not good enough to set the tone for every other program in the department.
Basketball is good enough to have a Pac-12 rival and there is no doubt the Buffs have developed what looks and feels a lot like a rivalry with Arizona.
The latest chapter was authored Saturday night at the Coors Events Center and it was a humbling one for Colorado. With the eyes of the nation paying a little more attention than usual because CU hosted ESPN's GameDay program, the Buffs were embarrassed on their home court 88-61.
"This loss is on me," Boyle said afterward, apologizing to a senior night crowd before the senior speeches for the second year in row.
Boyle said he has rarely been embarrassed as a coach but he definitely felt that way walking off Sox Walseth court for the final time in the 2013-14 regular season. He had good reason to be.
His team didn't score a field goal for the first 10 minutes of the game and that wasn't nearly the worst statistic to emerge from this one. The Buffs had recovered from their awful start to trail by only six points at halftime. Then they forgot to play defense in the second half.
Arizona shot 84.6 percent in the second half.
This performance from the Buffs will only add heat to this budding rivalry, at least from the Colorado perspective. Whether the Buffs meet the Wildcats next in the Pac-12 tournament in March or they have to wait until next year, they are going to want to redeem themselves.
Rivalries generally are made over time with a lot of ingredients added to create hard feelings and ill will or just a general dislike. Butt-kickings are among those ingredients.
So far in just three years there have been a series of events that have given this series a different feel than any other team CU plays.
The Buffs beat Arizona to win the 2012 Pac-12 title. CU's win on a last-second shot in Tucson in January 2013 was nullified by officials and Arizona won in overtime. The Buffs avenged that loss in Boulder later in the 2012-13 season.
CU lost at Arizona earlier this season and forward Xavier Johnson said 'they're not that good' in reference to an Arizona team ranked No. 1 in the nation at the time. Johnson also said the Buffs would win in 20-point blowout in Boulder.
I asked Arizona coach Sean Miller if he and his players were beginning to view Colorado as a rival at all. His answer made it clear that he does. He just couldn't resist referencing Johnson's comments.
"We have great respect," Miller said. "I don't think you have any of our players saying anything negative about Colorado or saying we're going to win by 20. We don't do that. For us, we have to play the right way. We have to compete hard and we respect all our opponents and certainly we respect Colorado."
Now the Buffs will stew in their embarrassment until they get another crack at the Wildcats. That's part of any good rivalry, too.
You know what's best about this new rivalry? The bad guys wear red.