Built for basketball, the Big East is a big hit in March yet again.

Louisville, Pittsburgh and Connecticut helped the league that was created decades ago for hoops become the first conference to earn three No. 1 seeds in the NCAA tournament.

North Carolina, the regular-season Atlantic Coast Conference champion, was the other top seed.

The Cardinals (28-5), winners of the regular-season and conference championships in the nation’s top-ranked conference, will open against the winner of an opening-round game Tuesday between Alabama State and Morehead State.

Among the aggrieved: Duke and Memphis, both overlooked in the quest for top seeding, settling for No. 2 seeds despite winning their conference tournaments. Memphis is often downgraded for playing in the less-than-steller Conference USA, but John Calipari’s team proved people wrong last year, making it to the national title game.