Curtis Bolton signed to active roster after Darren Waller, Hunter Renfrow placed on IR

[HotOffTheWire]

The Raiders made official the moves of tight end Darren Waller (strained left hamstring) and slot receiver Hunter Renfrow (ribs/hamstring) to injured reserve, announcing the news Thursday afternoon. Waller and Renfrow will spend a minimum of four games on IR before becoming eligible to return. The Raiders also placed linebacker Blake Martinez on the reserve/retired [more]

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