ALAMEDA, Calif. (AP) Oakland Raiders wide receiver Andre Holmes practiced Sunday for the first time since breaking his hand three weeks ago.

Holmes, who was third on the team with 47 catches in 2014, joins an already crowded receiving group anchored by first-round draft pick Amari Cooper and veterans Michael Crabtree and Rod Streater.

Rookie tight end Clive Walford, who is expected to play a significant role in Oakland's offense, also returned to the field after a prolonged absence, giving coach Jack Del Rio a mostly healthy roster heading into the season opener.

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How much Holmes and Walford will play against the Cincinnati Bengals on Sept. 13 is uncertain. Del Rio wouldn't discuss either player's status and said a decision will be made later in the week.

The Raiders also added depth to their secondary by claiming safety Keenan Lambert off waivers from Seattle.

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