Barnes was incensed following a testy 68-66 loss to the Ducks on Saturday that included heated exchanges between her and Oregon coach Kelly Graves.
Kimani Lawrence scored a game-high 18 points for ASU, which was playing its third game in 28 days -- and its second in 15. DJ Horne added 13 points and Graham finished with 10.
Colorado beat Arizona State 75-57 on Saturday night.
Tubelis scored 32 points, Christian Koloko added 16 points, and No. 6 Arizona dominated Utah inside for an 82-64 win on Saturday night.
The Wildcats (13-1, 3-0 Pac-12) dominated early, let the Buffaloes back in it and used a big run to start the second half to pull away. Arizona shot 51% and had 20 assists on 29 field goals to match its best start since 2015-16.
Mathurin wowed the fans at McKale Center at times as a freshman, soaring in for vicious dunks while averaging 10.8 points per game. He scored 31 points against Oregon State last season, but at times was a non-factor offensively.
Arizona hadn’t played since its first loss of the season, 77-73 at No. 18 Tennessee on Dec. 18 after two games were postponed due to COVID-19 issues with other teams.
“(Fulkerson) was the best player on the floor,” Arizona coach Tommy Lloyd said. “He drew 13 fouls, that’s almost a record. Our plan was to make him score lots of points and he did.”
The cancelation comes as games across the country are being postponed or canceled due to a surge in coronavirus cases.
GCU's next game is scheduled for Dec. 30 against Chicago State in Phoenix.
ASU scored 26 points off 21 San Francisco turnovers.
"We obviously didn’t execute well defensively," Arizona coach Tommy Lloyd said. "Our guys did a good job of not panicking, hanging in there and asserting their will and wearing them out over the course of the game."
Arizona State (5-6) has won three straight games following a five-game skid to close a stretch of six losses in seven games.
No. 11 Arizona used tough defense to outlast Illinois 83-79 on Saturday and stay undefeated.
The Sun Devils scored the first six points, took a 16-5 lead midway through the first half and Horne capped a 7-0 spurt with a jumper that made it 40-29 with 15:29 early in the second half.
The Wildcats (8-0) continued their run of overwhelming opponents, smothering the Cowboys (8-1) on the defensive end to set up easy baskets in transition for a 31-point halftime late.
Bennedict Mathurin scored a season-high 29 points, including four 3-pointers, and No. 11 Arizona beat Oregon State 90-65 on Sunday.
DJ Horne scored 23 points, Jay Heath hit a 3-pointer in the closing seconds of overtime and Arizona State beat Oregon 69-67 on Sunday night to snap a five-game skid.
Washington State held Arizona State to its fewest points in 75 years with a 51-29 win Wednesday night.
No. 17 Wildcats picked up where they left off before Thanksgiving, dishing out 31 assists to overwhelm Sacramento State 105-59 Saturday night.