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The Arizona Wildcats are as healthy as they have been all season, but one position – defensive line – remains a concern.

The only rotation player listed on the UA’s official injury report for the UCLA game Saturday (6 p.m., Pac-12 Networks) is defensive tackle Luca Bruno. Bruno is questionable to play because of a concussion suffered against Colorado last week.

If Bruno can’t play, Arizona likely will go with a four-man rotation at the two interior defensive line positions consisting of Dereck Boles, Parker Zellers, Finton Connolly and Kurtis Brown.

Zellers played last week on an ankle that’s about 75 percent healed from a sprain suffered earlier this season. Brown is a true freshman.

Other options include senior Marcus Griffin and redshirt junior Larry Tharpe Jr., who has been playing defensive end but could play inside if necessary.

Arizona’s defensive front struggled against the Buffaloes, yielding a season-high 300 rushing yards.

The only other player on this week’s injury report is freshman DE-LB Jalen Harris, who is doubtful because of a shoulder injury.

Harris has appeared in four games. If his injury turns out to be season-ending, it’s possible he could apply for a medical redshirt. To get a medical redshirt, a player must not have competed in more than 30 percent of his team’s games. If Arizona makes a bowl game, Harris would be right at that cutoff.