(2) Arizona 73 (10) Butler 52 Sun., March 18 Kansas City RECAP			KEY TO THE GAME:   Arizona took control with a pair of spurts -- an 11-2 run to close the first half and give the Wildcats a four-point lead, and a 15-0 second-half run in which Arizona held Butler scoreless for nearly seven minutes with their aggressive defense.			GAME BALL GOES TO:   Gilbert Arenas had 15 points, eight rebounds and a pair of assists to pace a balanced Arizona attack. Four Wildcats were in double-figures and the 'Cats hit 17 of 18 free throws.			WHAT'S NEXT:   Arizona plays (3) Ole Miss in Sweet 16 on Fri., March 23 at San Antonio.