LAS VEGAS (AP) - Sabrina Ionescu had 31 points and nine rebounds to lead No. 3 Oregon to an 88-70 victory over No. 13 Arizona on Saturday in the Pac-12 Tournament semifinals.
The Ducks (30-2) return to the title game for the third straight season and are looking for their second championship in that span.
Oregon shot a blistering 53.2% (33 of 62) from the floor, including 15 of 31 (48.4%) from 3-point range.
Both teams combined for 25 from beyond the arc, setting a new Pac-12 Tournament record for 3-pointers made, breaking last year's mark of 21, set by Washington and Oregon State.
Erin Boley had 18 points for Oregon, while Ruthy Hebard added 14.
The game appeared to be headed for a shootout from the opening tip, as the teams traded runs while burying seven 3-pointers in the first quarter alone. Boley hit her first four shots from the field and had 10 points during Oregon's game-opening 16-6 run.
Arizona answered quickly with four consecutive 3-pointers -- including two from reserve Helena Pueyo -- as the Wildcats used a 14-5 run to pull within a point of Oregon, at 21-20.
Ionescu found her touch in the second quarter and hit four of Oregon's first six field goals, part of a 12-0 run that led to the Ducks taking a 42-26 lead late in the first half. Arizona outscored Oregon 7-1 down the stretch, including a buzzer-beating 3-pointer from McDonald to get the deficit down to 10, sending the Ducks into the locker room leading 43-33.
Oregon outscored Arizona 20-13 in the second quarter and proved to be the biggest difference in the game.