SAN JOSE, Calif. — Trevon Bluiett scored 25 points, Sean O’Mara scored inside with 40 seconds left and No. 11 seed Xavier upset No. 2 Arizona 73-71 in the West Region of the NCAA Tournament on Thursday night.

Xavier (30-13) stayed with the second-seeded Wildcats behind Bluiett’s 18 first-half points and tracked down the Wildcats after they tried to pull away in the second half. O’Mara scored on a power move inside, but missed a free throw to give Arizona (32-5) a final chance.

Allonzo Trier missed a 3-pointer in the closing seconds and Xavier was able to dribble out the clock, earning its first trip to the Elite Eight since 2008.

[naviga:h3]Oregon 69, Michigan 68[/naviga:h3]

KANSAS CITY, Mo. — Tyler Dorsey scored 20 points and made the go-ahead layup with 1:08 left, and third-seeded Oregon ended No. 7 Michigan’s dramatic postseason run with a 69-68 victory in a Midwest Regional semifinal on Thursday night.

Dorsey, the man the Ducks call “Mr. March,” had his sixth straight game scoring 20 or more points.

The Wolverines (27-11) had one more chance to extend their run after Dylan Ennis missed a free throw with 15 seconds left. But Derrick Walton, who had carried the Wolverines the last three weeks, was off with his long jumper just before the buzzer.

[naviga:h3]Kansas 98, Purdue 66[/naviga:h3]

KANSAS CITY, Mo. — Player of the year front-runner Frank Mason III poured in 26 points, Kansas turned on the jets in the second half and the top-seeded Jayhawks soared to a 98-66 blowout of No. 4 seed Purdue on Thursday night in the Midwest Regional semifinals.

Devonte Graham also had 26 points and Josh Jackson had 15 points and 12 rebounds for the Jayhawks (31-4).