Based on the information in the sources, here are the top-seeded regular season champions from each conference that have been eliminated from their respective tournaments as of the results provided through May 23, 2025:
- West Virginia (Big 12) – As the No. 1 seed in the Big 12 Tournament, West Virginia won Game 6 against Cincinnati but was then defeated by No. 4 seed Arizona in Game 9. Given the tournament format includes single-elimination after the first round, their loss in Game 9 eliminated them.
- Yale (Ivy League) – Competing as the No. 1 seed in the Ivy League Tournament, Yale lost their first game (Game 1) to No. 4 Harvard. They won Game 3 against Penn in the loser’s bracket, but were then eliminated after a second loss in Game 5, again falling to Harvard. (Note: Columbia won the conference tournament and the auto bid to the field of 64)
- Murray State (Missouri Valley) – As the No. 1 seed in the Missouri Valley Tournament, Murray State won their first game (Game 4) against Belmont. They then lost Game 7 to Southern Illinois and were eliminated in Game 10 with a loss to UIC, marking their second defeat in the double-elimination bracket.
- Southeastern Louisiana (Southland) – The No. 1 seed in the Southland Tournament, Southeastern Louisiana lost their opening game (Game 2) to New Orleans. They won Game 3 against McNeese but were eliminated in their next game (Game 5) with a loss to Northwestern State, accumulating their second loss.
- Texas (SEC) – Playing as the No. 1 seed in the SEC Tournament, Texas lost their first game (Game 9) to No. 8 Tennessee. In this tournament format, a loss eliminates the team from championship contention after the initial rounds, resulting in their elimination.
- Sacramento State (Western Athletic) – The No. 1 seed in the Western Athletic Tournament, Sacramento State won their first game (Game 6) against Grand Canyon. They then lost Game 9 to Utah Valley and were eliminated after a second loss in Game 11 against Abilene Christian.
It is important to note that this list is based on the completed games and results provided in the source material as of the conclusion of play on May 23, 2025. Several other top seeds in conferences with ongoing tournaments (double-elimination format) have incurred one loss but have not yet been eliminated.
