TUCSON, Ariz. — TUCSON, Ariz. (AP) — Freshman quarterback Bear Bachmeier ran for a 7-yard touchdown in the second overtime, BYU’s defense stopped Arizona on the ensuing drive and the 18th-ranked Cougars stayed undefeated with a 33-27 win over the Wildcats on Saturday night.Bachmeier’s run up the middle gave BYU a 33-27 lead, but the 2-point conversion attempt was deflected and fell incomplete. Arizona had a chance to tie the game, but Noah Fifita’s fourth-down pass bounced off the hands of Javin Whatley, who was trying to make a tough catch in the end zone.“There’s no better feeling than winning, especially winning in double overtime on the road against a really good team,” BYU receiver Parker Kingston said. “It was awesome.”BYU (6-0, 3-0 Big 12) has won its first six games for a second straight season and seventh time in program history.Arizona (4-2, 1-2) has dropped two of its past three games.BYU fought back from a 10-point deficit in the fourth quarter, tying the game at 24 with 19 seconds left in regulation when Bachmeier ran for a 2-yard touchdown.Kedrick Reescano gave Arizona a 24-14 lead with 11:14 left in the game after a po …