Nick Johnson put an awful first half behind him and came up big for Arizona in the final 2:45.

The Pac-12 Player of the Year scored all of his 15 points over that span after missing his first 10 shots and helped Arizona hold off San Diego State 70-64 on Thursday night in Anaheim to reach the final eight of the NCAA tournament.

"When I hit one shot it just started to feel a little bit better," he said. "I just kept on hitting shots."

Mostly, Johnson hit free throws, making all 10 of his attempts to go with a field goal and a 3-pointer after the Aztecs shut him down for the first 37 minutes.

"He just exploded in the second half," said San Diego State's Dwayne Polee, who guarded Johnson. "I can't say that we didn't play hard defense, but he just made a lot of good shots."

Freshman Aaron Gordon of San Jose and Rondae Hollis-Jefferson scored 15 points each for the top-seeded Wildcats (33-4), who will play Wisconsin on Saturday in the West Regional final.

Arizona coach Sean Miller joined his brother Archie in the final eight. The younger Miller coached Dayton to an 82-72 victory over Stanford of the Pac-12 in the South Regional semifinals in Memphis, Tenn.

"We watched the game in our locker room," Miller said. "The fact that two of us are in the Elite Eight is a very unique situation."

Xavier Thames scored 25 points and Dwayne Polee added 13 points for the Aztecs (31-5), who were trying to reach the final eight for the first time in school history under 69-year-old coach Steve Fisher.

"One of these days we're going to get to a Final Four," Fisher said.

Wisconsin 69, Baylor 52: Ben Brust and his Badgers teammates sliced and diced the Bears' vaunted zone defense. When Baylor had the ball, 7-foot Frank Kaminsky always seemed to be right in their way.

Kaminsky had 19 points and six blocks, and Brust had 14 points as Wisconsin reached the final eight for the third time in school history.

Brust hit three of the six 3-pointers for the second-seeded Badgers (29-7), who jumped to a 14-point lead in the first half and never let up on the overmatched Bears (26-12).

"We get 40 more minutes, and I'm awfully proud of them," said Badgers coach Bo Ryan, who's never been to the Final Four.

Cory Jefferson scored 15 points for the sixth-seeded Bears.

"Wisconsin really played a great game, and we did a very poor job in making things tough," Baylor coach Scott Drew said. "... Once we got behind, we had to do some things we wished we didn't have to do."

REGIONAL FINAL
No. 1 Arizona vs. No. 2 Wisconsin, 5:30 p.m. Saturday TBS