UCLA starting quarterback Dorian Thompson-Robinson will not play against Arizona on Saturday night, according to media reports.
Thompson-Robinson, a junior, also missed last weekโs game at Oregon because of COVID-19 contact tracing.
Redshirt freshman Chase Griffin started in place of Thompson-Robinson. In his first collegiate appearance, Griffin completed 19 of 31 passes for 195 yards with one touchdown and two interceptions. He also lost a fumble. The Bruns lost 38-35 to the heavily favored Ducks.
Thompson-Robinson has passed for 4,511 yards and 35 touchdowns in 22 career games. He also has rushed for 427 yards and six touchdowns.
Arizona is looking to break a school-record nine-game losing streak. The Wildcats and Bruins are set to kick off a little after 6 p.m. MT at the Rose Bowl.
Photos: UCLA outlasts Arizona in Pasadena; Wildcats remain winless
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Arizona coach Kevin Sumlin, center, watches from the sideline during the first half of the team's game against UCLA.
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Arizona quarterback Grant Gunnell, bottom, is tackled by UCLA linebacker Bo Calvert after throwing during the first half of an NCAA college football game Saturday, Nov. 28, 2020, in Pasadena, Calif. (AP Photo/Marcio Jose Sanchez)
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Arizona running back Michael Wiley, right, scores a rushing touchdown during the first half of an NCAA college football game against UCLA, Saturday, Nov. 28, 2020, in Pasadena, Calif. (AP Photo/Marcio Jose Sanchez)
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Arizona running back Michael Wiley, center with ball, celebrates his rushing touchdown against UCLA during the first half of an NCAA college football game Saturday, Nov. 28, 2020, in Pasadena, Calif. (AP Photo/Marcio Jose Sanchez)
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Arizona running back Michael Wiley, second from left, runs next to UCLA defensive back Elisha Guidry (30) during the first half of an NCAA college football game Saturday, Nov. 28, 2020, in Pasadena, Calif. (AP Photo/Marcio Jose Sanchez)
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UCLA running back Brittain Brown (28) carries against the Arizona during the first half of an NCAA college football game Saturday, Nov. 28, 2020, in Pasadena, Calif. (AP Photo/Marcio Jose Sanchez)
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Arizona wide receiver Jamarye Joiner (10) runs after a catch during the first half of the team's NCAA college football game against UCLA on Saturday, Nov. 28, 2020, in Pasadena, Calif. (AP Photo/Marcio Jose Sanchez)
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Arizona quarterback Will Plummer, center, throws under pressure during the first half of the team's NCAA college football game against UCLA on Saturday, Nov. 28, 2020, in Pasadena, Calif. (AP Photo/Marcio Jose Sanchez)
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Pass protection was an issue again for QB Will Plummer and Arizona at UCLA.
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UCLA running back Brittain Brown, right, lunges into the end zone for a touchdown after a reception during the first half of an NCAA college football game against the Arizona onSaturday, Nov. 28, 2020, in Pasadena, Calif. (AP Photo/Marcio Jose Sanchez)
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Arizona quarterback Will Plummer, left, is chased by UCLA defensive lineman Datona Jackson during the first half of an NCAA college football game Saturday, Nov. 28, 2020, in Pasadena, Calif. (AP Photo/Marcio Jose Sanchez)
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UCLA quarterback Chase Griffin runs against Arizona during the first half of an NCAA college football game Saturday, Nov. 28, 2020, in Pasadena, Calif. (AP Photo/Marcio Jose Sanchez)
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UCLA coach Chip Kelly signals from the sideline during the second half of the team's NCAA college football game against Arizona on Saturday, Nov. 28, 2020, in Pasadena, Calif. (AP Photo/Marcio Jose Sanchez)
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Arizona players huddle in an empty Rose Bowl during the second halfย against UCLA.
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Arizona running back Michael Wiley (6) runs as UCLA linebacker Mitchell Agude (45) makes a tackle during the second half of an NCAA college football game Saturday, Nov. 28, 2020, in Pasadena, Calif. (AP Photo/Marcio Jose Sanchez)
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Arizona quarterback Will Plummer (15) runs between UCLA defensive back Stephan Blaylock (4) and defensive back Mo Osling III (7) during the second half of an NCAA college football game Saturday, Nov. 28, 2020, in Pasadena, Calif. (AP Photo/Marcio Jose Sanchez)
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Arizona receiver Jamarye Joiner cannot make the catch as UCLA defensive back Rayshad Williams defends during the second half at the Rose Bowl.
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Arizona place holder Jacob Meeker-Hackett, left, is pushed out of bounds by UCLA defensive lineman Datona Jackson (58) after a botched field goal-attempt during the second half of an NCAA college football game Saturday, Nov. 28, 2020, in Pasadena, Calif. (AP Photo/Marcio Jose Sanchez)
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UCLA quarterback Chase Griffin throws against Arizona during the second half of an NCAA college football game Saturday, Nov. 28, 2020, in Pasadena, Calif. (AP Photo/Marcio Jose Sanchez)
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Arizona wide receiver Jamarye Joiner, bottom, makes catch in front of UCLA defensive back Elisha Guidry (30) during the second half of an NCAA college football game Saturday, Nov. 28, 2020, in Pasadena, Calif. (AP Photo/Marcio Jose Sanchez)
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UCLA players pose for photos after intercepting an Arizona pass during the second half of an NCAA college football game Saturday, Nov. 28, 2020, in Pasadena, Calif. (AP Photo/Marcio Jose Sanchez)
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UCLA running back Demetric Felton Jr. carries against Arizona during the second half of an NCAA college football game Saturday, Nov. 28, 2020, in Pasadena, Calif. (AP Photo/Marcio Jose Sanchez)
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UCLA defensive back Stephan Blaylock (4) is congratulated by teammates after he intercepted an Arizona pass during the second half of an NCAA college football game Saturday, Nov. 28, 2020, in Pasadena, Calif. (AP Photo/Marcio Jose Sanchez)
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UCLA running back Brittain Brown (28) celebrates after a rushing touchdown against Arizona during the second half of an NCAA college football game Saturday, Nov. 28, 2020, in Pasadena, Calif. (AP Photo/Marcio Jose Sanchez)
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Arizona quarterback Grant Gunnell (17) rolls on the ground after going down with an injury on the first play from scrimmage at UCLA.
