Nathan Adrian added 16 points for the Mountaineers (24-7, 12-6 Big 12), who clinched the second seed in next week's conference tournament behind top-ranked Kansas.
Naz Mitrou-Long led the Cyclones with 22 points. Monte Morris and Deonte Burton scored 17 apiece, and Matt Thomas had 16.
Miles scored 16 of his team's 18 points during an eight-minute stretch spanning both halves.
The second-seeded Shockers (28-4) shook off a slow start to beat Bradley (13-20) for the 16th straight time. Bradley, the No. 7 seed, hasn't beaten Wichita State since Feb. 24, 2010. Darrell Brown led the Braves with 18 points, and Antoine Pittman had 13.
Wichita State shot only 37.1% (23 of 62) from the field but outrebounded Bradley 51-37. The Shockers closed the first half with a 28-6 run and led 42-16 at the break.
Pacific 89, Pepperdine 84: Ray Bowles scored 26 points and made 11 of 12 foul shots as the Tigers withstood a career-high 41 points from Waves’ Lamond Murray Jr. in the first round of the West Coast Conference tournament in Las Vegas. Pacific advances to play top-seeded and No. 4-ranked Gonzaga in the quarterfinals on Saturday.
Nolan Taylor's layup brought the Waves to within 71-70 with 6:05 left before Bowles converted a three-point play off a layup and drew the foul on Taylor. Anthony Townes made one of two foul shots for a 75-70 lead and Pacific (11-21) held on from there. Pepperdine (9-22) led at halftime, 42-41,. Townes added 19 points for Pacific, which shot 53%.
UC Davis at UC Irvine, 3 p.m.
Hawaii at Long Beach State, 5 p.m.
UC Santa Barbara at Cal Poly, 7 p.m.
Cal State Fullerton at Cal State Northridge, 7:30 p.m.