TUCSON, Ariz. (AP) — Ryan Anderson had 18 points and 12 rebounds in his Arizona debut, lifting the 12th-ranked Wildcats to a season-opening 79-61 victory over Pacific on Friday night.

Arizona coach Sean Miller shuffled his lineup around all night in an effort to determine which combinations work well on this rejiggered team. No matter who the Wildcats had out there, they had no trouble against Pacific, building a 17-point lead by halftime.

Anderson, a transfer from Boston College, hit 5 of 8 shots and Gabe York had 13 points. Kadeem Allen added 13 points, five assists and four rebounds in his first game as the Wildcats' point guard.

Arizona extended its home winning streak to 39 straight games, including 25 straight in nonconference, and moved to 8-0 in season openers under Miller.

T.J. Wallace had 19 points and eight rebounds to lead Pacific, which shot 36 percent.

Arizona went to its second straight Elite Eight last season, but lost Stanley Johnson, Rondae Hollis-Jefferson, T.J. McConnell and Brandon Ashley from that team.

The Wildcats still have the sharpshooting York, 7-foot center Kaleb Tarczewski and point guard Parker Jackson-Cartwright to go with a talented group of new players, making them again the favorites in the Pac-12.

York and Allen were the catalysts early against Pacific.

A streaky shooter who had some big games last season, York was aggressive to start his senior season, confidently stroking in 3-pointers and driving hard to the basket. He had 10 points on 4-of-7 shooting by halftime.

Allen, the 2013-14 national JUCO player of the year, had no trouble getting into the lane, leading to easy baskets for himself or teammates. He had nine points and four assists, setting up Mark Tollefson along the baseline for a layup in the closing seconds of the first half to put Arizona up 41-24.

Pacific had trouble with Arizona's length and athleticism on defense, hitting 7 of 27 shots in the first half, including 1 of 10 from 3-point range.

TIP INS

Pacific: The Tigers are 0-5 all-time against Pac-12 opponents.

Arizona: Junior G Elliott Pitts sprained his knee in practice this week and did not play. ... The Wildcats included former player Michael Wright in their pregame video. The 35-year-old was found dead with a head wound in New York on Tuesday, ruled a homicide by police.

WHAT'S NEXT

Pacific hosts Cal State-Fullerton on Tuesday.

Arizona hosts Bradley on Monday.