Arizona 84, Gonzaga 61: Aaron Gordon had 18 points, six rebounds, six assists and four steals as the Wildcats forced a season-high 21 turnovers in the round of 32 of the NCAA tournament in San Diego.

Rondae Hollis-Jefferson added 18 points, five rebounds, five assists and four blocks while Nick Johnson chipped in 17 points, five rebounds, five assists and four blocks for No. 1 seed Arizona (32-4), which advanced to meet fourth-seeded San Diego State in the West regional semifinals on Thursday in Anaheim, Calif. T.J. McConnell had 12 points and six assists and Gabe York chipped in 11 points as the Wildcats earned their third Sweet 16 berth in the last five years.

Przemek Karnowski led eighth-seeded Gonzaga (29-7) with 14 points and 10 rebounds while Kevin Pangos battled through a foot injury that forced him to briefly leave the game early in the first half and finished with 12 points. David Stockton contributed 10 points and six assists for the Bulldogs, who were held to 22 field goals after shooting 50 percent in an 85-77 second-round win over Oklahoma State.

Arizona converted 11 turnovers into 19 points in the first half and led 47-34 at the break after Gonzaga closed with a 12-4 run. The Bulldogs committed four more turnovers in the first four minutes of the second half and fell behind 59-38 on Gordon’s dunk with just under 14 minutes remaining.

Gordon, who made eight of his 11 shots from the field and played just 23 minutes, pushed the Wildcats’ lead to 63-43 with just under 11 minutes left and Arizona improved to 4-1 all-time against the Bulldogs. Arizona succeeded in neutralizing Gonzaga’s Gary Bell, Jr. and Sam Dower, who combined for seven points on 3-of-17 shooting.

GAME NOTEBOOK: Arizona won 69-60 at San Diego State on Nov. 14, when Johnson scored a game-high 23 points and the Wildcats outrebounded the Aztecs 39-28. … Bell, who was 16-of-23 from the field over his previous three games, was held scoreless and missed all five of his field goals. … Arizona was outrebounded 39-28 but set a team record for steals in an NCAA tournament game with 15.