NCAA BK

Big Ten rides NCAA Tournament surge with 3 teams in Sweet 16

Villanova guard Jalen Brunson (1) follows through on a final shot as Wisconsin players celebrate the end of their second-round men's college basketball game in the NCAA Tournament, Saturday, March 18, 2017, in Buffalo, N.Y. (AP Photo/Bill Wippert)

Villanova guard Jalen Brunson (1) follows through on a final shot as Wisconsin players celebrate the end of their second-round men's college basketball game in the NCAA Tournament, Saturday, March 18, 2017, in Buffalo, N.Y. (AP Photo/Bill Wippert)

This down year for Big Ten basketball might just end on an up note in the NCAA Tournament.

Eighth-seeded Wisconsin took out No. 1 overall seed and defending national champion Villanova in a second-round game Saturday, and No. 7 Michigan ousted No. 2 Louisville on Sunday. In between, No. 4 Purdue defeated No. 5 Iowa State.

Suddenly, the conference that went into the tournament with no team seeded higher than No. 4 has three in regional semifinals, matching last year's total. The Big Ten would have a fourth Sweet 16 team - most since 2013 - if No. 9 Michigan State were to knock off No. 1 Kansas later Sunday.

More from FoxSports

The Big Ten went into the tournament No. 4 in conference RPI behind the ACC, Big 12 and Big East.

---

For more AP college basketball coverage: http://collegebasketball.ap.org and http://twitter.com/AP-Top25