While NCAA basketball's Power Four conference tournaments wrapped up on Sunday, teams from mid-major Division I leagues are still battling for invites to the Big Dance, where they'll aim to upset top March Madness contenders.
Already harnessing upset momentum is former Pac-12 squad Oregon State, who won the West Coast Conference (WCC) tournament as the No. 4 seed on Tuesday.
After conference realignment saw most of the starters from last season's Elite Eight team transfer to Power Four programs, Oregon State finished the 2024/25 regular-season at 16-15 (12-8 in WCC play).
This week, however, the Beavers found another gear, tearing through their tournament and upsetting the two WCC regular-season co-champions along the way.

Oregon State paves a path to NCAA tournament underdog
First, Oregon State narrowly defeated top-seeded Gonzaga 63-61 in Monday's semifinals, before beating back-to-back defending champion No. 2-seed Portland 59-46 in Tuesday's tournament finale — only the fourth loss suffered by the Pilots all season.
Oregon State's unlikely March Madness bid is the program's 13th overall, and the ninth in the NCAA tournament's last 11 editions.
"I'm just so happy and so proud of this team," said Oregon State head coach Scott Rueck. "For this group to cover the ground that they did this year, from day one until now, is absolutely remarkable. It's one of the most special things I've been a part of."
The Beavers’ surge, however, holds consequences for both Portland and Gonzaga, whose slim chances of making Sunday's bracket now rest with the NCAA selection committee.
While Portland is a more recent contender on the national stage, Gonzaga hasn't missed an NCAA tournament since 2016, with the Bulldogs appearing in all but two brackets since their 2007 March Madness debut.

NCAA underdogs looks to spur chaos in March Madness
Should they make the cut, at-large underdogs Portland and Gonzaga would join Oregon State and other smaller conference champions in trying to bust brackets by upsetting top contenders in the first few rounds of the NCAA's competition.
Other mid-major standouts are already considered likely members of the 68-team national pool, with current projections listing Fairfield University (Metro Atlantic Athletic Conference) and new No. 24-ranked South Dakota State (Summit League) claiming seeds as high as No. 9.
Projections also show that the Ivy League is on the precipice of sending a full trio of upset-hungry teams to the NCAA tournament.
While regular-season champion Columbia is expected to claim a national No. 11 seed after Saturday's conference tournament final, strong seasons from both Princeton and Harvard have the pair currently snagging one of the final four at-large bracket spots.
Atlantic 10 tournament victors George Mason could also pose a threat to Power Four contenders, with the Patriots clinching their first-ever NCAA tournament berth on Sunday despite ceding the regular-season conference title to Richmond.
Though it’s not always wise to bet against heavyweights in the NCAA tournament's opening rounds, emerging college basketball underdogs are embracing the spotlight — and welcoming the opportunity to shake things up after Selection Sunday.