Louisville earned the top overall seed in the NCAA tournament Sunday, while Kansas, Indiana and Gonzaga also received No. 1s after a topsy-turvy regular season and another round of weekend upsets.

The selection committee had its work cut out after five teams swapped the top ranking in The Associated Press poll, capped by the West Coast Conference champion Zags (30-2) moving to the lead spot for the first time in school history.

But it's No. 4-ranked Louisville (29-5) that leads the 68-team field after sharing the Big East regular-season title, then pulling off a stunning turnaround to beat Syracuse in the final of the conference tournament for their 10th straight victory. The Cardinals came back from a 16-point deficit early in the second half for a 78-61 rout.