SANTA CLARA, Calif. (AP) — The San Francisco 49ers have activated defensive lineman Ronald Blair and promoted offensive lineman Darrell Williams Jr. from the practice squad.

The 49ers placed receiver Pierre Garcon on injured reserve and released offensive lineman Bryce Harris on Saturday to make room on the roster. Blair and Williams are expected to play Sunday at home against Arizona.

Blair played 16 games as a rookie last season but has been sidelined since training camp with a hand injury. He had three sacks and 18 tackles as a rookie.

Williams has spent the season on the practice squad after being signed as an undrafted free agent out of Western Kentucky.

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