An already short-handed tight end corps lost rookie Charlie Woerner onto the NFL’s COVID-19 reserve list Saturday, a day before the 49ers face the Dallas Cowboys in Arlington, Texas.

Woerner, primarily a blocking specialist, is the third 49ers player to go on that list this week, following guard Colton McKivitz and running back Austin Walter. Offensive line coach John Benton will miss a second straight game after testing positive for COVID-19 last Sunday and going into self-quarantine.

With George Kittle kept on Injured Reserve despite resuming practice this past week, the 49ers dipped into their practice squad and brought up tight end Daniel Helm to serve as their No. 3 tight end Sunday, behind Jordan Reed and Ross Dwelley.

NZEOCHA ACTIVATED

Linebacker Mark Nzeocha, one of the 49ers’ top special teams players, got activated off Injured Reserve. He’d been recovering from a quadriceps injury dating back to a Sept. 27 win at the New York Giants.

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OFFENSIVE LINE HELP

With McKivitz and Tom Compton (concussion; IR) unable to play, the 49ers summoned Dakoda Shepley and Isaiah Williams from the practice squad to serve as backups on the offensive line’s interior, along with Tony Bergstrom. Justin Skule is expected to make his first start at right guard.