Lyons scored 23 points including his gutsy three-point play for the Wildcats, who rallied from a 10-point deficit in the second half before falling just short of their second NCAA regional final in four years. Solomon Hill added 16 points in his native Los Angeles, but the rest of Arizona combined for just 31 points on 10-for-29 shooting.
After Arizona jumped out to that early 11-point lead, Ohio State gathered its game and mounted a 33-13 surge spanning halftime, taking a 53-43 lead with 11 minutes left. The Wildcats finally answered, but Ross kept the Buckeyes in front with nine consecutive points down the stretch.
Craft became a tournament hero last Sunday against Iowa State, hitting a last-second 3-pointer and drawing a questionable charge moments earlier in the Buckeyes' 78-75 win. Ross had his turn in the spotlight at Staples Center, and he didn't flinch.
The game was the second NCAA tournament meeting between Ohio State coach Thad Matta and Arizona's Sean Miller, whose friendship goes back two decades to their time together at Miami of Ohio and Xavier.
Despite losing to UCLA in the Pac-12 tournament semifinals to cap an inconsistent stretch of play, Arizona got a No. 6 seed and blew out Belmont and Harvard in the NCAA tournament's first weekend, reaching the regional semifinals for the 15th time.
Ohio State hasn't lost since Feb. 17, beating Indiana on the road before winning the Big Ten tournament. The Buckeyes had much more trouble than Arizona in their first two NCAA games, but they're showing a knack for last-minute heroics at the perfect time.
Arizona took the lead on its first basket, a 3-pointer from Lyons in the opening minute, and held it throughout a slow-moving first half featuring 19 fouls. With superior ball movement and scoring balance, the Wildcats eventually pushed the margin to 31-20 on Nick Johnson's 3-pointer with 7 minutes left in the half.
Ohio State finally awoke when Craft returned to the game after sitting early with two fouls, trimming the margin to 38-34 by halftime. The Buckeyes finished the half on a 14-7 run capped by the second 3-pointer from Thomas, who scored 16 of their 34 first-half points with his steady all-around game.
Thompson's layup with 17:39 left gave Ohio State its first lead since 2-0, and the Buckeyes opened the second half with a 10-0 run while holding Arizona scoreless for more than 6Â½ minutes spanning halftime.
As the only school west of Wichita left in the regional, Arizona had a significant home-crowd advantage at the cavernous Staples Center, packing the lower bowl with thousands of fans. But Ohio State also had a healthy fan turnout led by Cleveland's favorite son, "The Price Is Right" host Drew Carey.