SANTA CLARA (AP) — San Francisco 49ers defensive lineman Arik Armstead has been sidelined by a hamstring injury.

The 49ers announced Tuesday that Armstead is week-to-week because of the injury. The team also said tight end Cole Hikutini will miss practice this week with a groin injury and right guard Joshua Garnett is day to day with a knee injury.

The Niners were able to activate five players who hadn’t practiced since the start of camp last week. Receiver Trent Taylor (back), linebacker Dekoda Watson (calf) and guard Jonathan Cooper (knee) were taken off the physically unable to perform list. Linebacker Malcolm Smith (lower leg) and defensive back Marcell Harris (Achilles) were activated from the non-football injury list.

San Francisco also signed tight end Wes Saxton to a one-year deal and waived cornerback C.J. Goodwin.