As the No. 1 seed in the Pac-12 Tournament, Arizona defeated Colorado, UCLA (avenged from 82–74 loss on February 4 in Tucson, AZ) and USC to win the 2nd straight Pac-12 tournament championship title for the 7th time. As a result, the Wildcats received the conference's automatic bid to the NCAA Tournament for the sixth consecutive year (35th NCAA tournament appearances). As a No. 4 seed in the South region, in the First round, they lost to No. 13 seed Buffalo 68–89. Brandon Williams, originally from Panorama City, CA was the first commitment in the Arizona class. He committed to Arizona on June 6, 2017, over Gonzaga, Kansas, UCLA and USC. He was a consensus four-star prospect. He backed out of his commitment to Arizona after more information relating to the 2017–18 NCAA Division I men's basketball corruption scandal came out (similar to former Arizona commit Shareef O'Neal), but he ultimately decided to stay with Arizona on May 5, 2018. Niccolò 'Nico' Mannion, originally from Siena, Italy, was originally a part of the 2020 recruiting class, but reclassified to the 2019 class in July 2018. He verbally committed to Arizona on September 14, 2018, over Marquette. Mannion is a consensus five-star prospect out of Pinnacle HS in Phoenix, Arizona. Christian Koloko, originally from Cameroon, was the second commitment in the Arizona class. He committed to Arizona on September 23, 2018, over California, Creighton, and Vanderbilt. He is a consensus three-star prospect out of Sierra Canyon School in Chatsworth, California. Josh Green, originally from Sydney, New South Wales, Australia was the third commitment in the Arizona’s 2019 recruiting class. He verbally committed to Arizona on October 4, 2018, over Kansas, North Carolina, Villanova, USC and UNLV. Green is a consensus five-star prospect out of IMG Academy in Bradenton, Florida. Terry Armstrong, originally from Flint, MI was the fourth commitment in the Arizona’s 2019 recruiting class. He verbally committed to Arizona on October 24, 2018, over Michigan State, New Mexico, Oregon and Oklahoma. Armstrong is a consensus four-star prospect out of Bella Vista Prep in Scottsdale, Arizona. Zeke Nnaji, originally from Lakeville, MN was the fifth commitment in the Arizona’s 2019 recruiting class. He verbally committed to Arizona on November 23, 2018, over UCLA, North Carolina, Kansas and Purdue.