The Raiders on Thursday signed six of their 10 selections in the 2013 NFL draft.
Tight ends Nick Kasa from Colorado and Mychal Rivera from Tennessee, Central Florida running back Latavius Murray, wide receiver Brice Butler from San Diego State, Oklahoma defensive tackle Stacy McGee and defensive end David Bass from Missouri Western State now are under contract.
Still unsigned are the Raiders first four selections: cornerback D.J. Hayden, offensive tackle Menelik Watson, linebacker Sio Moore and quarterback Tyler Wilson.
It's expected that the four unsigned draftees will be under contract before the Raiders begin training camp in Napa in late July.