The Raiders are still tinkering with their roster, even as they gather this week for a three-day mandatory minicamp.

On Monday, Oakland signed a pair of veteran free-agent defensive linemen in Ahtyba Rubin, 31, and Frostee Rucker, 34.

Rubin, who plays on the inside, is 6-foot-2 and 321 pounds. Since coming into the NFL in 2008 with Cleveland, he’s bounced from the Browns to the Seahawks – where he started every game in 2015 and 2016 – and the Falcons