Jason Campbell.

THE ASSOCIATED PRESS

NAPA, Calif. -- Coach Tom Cable says off-season acquisition Jason Campbell will open training camp as the Oakland Raiders' starting quarterback.

Cable spoke on Wednesday at the Raiders' first full day of camp. The team has meetings scheduled all day long and will begin practice on Thursday.

Cable says he is going with Campbell as the first-stringer because Bruce Gradkowski missed the past three months with a torn pectoral muscle.

Cable said after acquiring Campbell from Washington during the draft in April that there will be a competition at quarterback.