Arizona head coach Sean Miller announced the signing of his 2015 recruiting class on Thursday.

The Wildcats' class features four ESPN 100 prospects, including three top-30 players. Joining Miller in Tucson next season will be ESPN 100 shooting guard Allonzo Trier (No. 17 overall), ESPN 100 small forward Ray Smith (No. 24), ESPN 100 point guard Justin Simon (No. 27) and ESPN 100 center Chance Comanche (No. 97).

"This is an important class for us, as we're bracing for and expect a number of underclassmen on this year's team to pursue professional careers," Miller told the school's website. "With the combination of seniors and underclassmen we will lose after this season, this class is significant in many ways. Two qualities we love about this class are that each member is a high-character individual and the fact that their qualities on the court complement each other very well."

Miller's Wildcats held the top spot in ESPN.com's Class Rankings until being unseated by Kentucky on Thursday.