When the Raiders take the field for the first time Thursday, it will be without the services of starting left guard Robert Gallery.
Gallery recently underwent an emergency appendectomy and will miss at least the first two weeks of training camp, according to a team source.
When Gallery does return, his duty will be limited until it is determined the wound has healed to the point where a hernia is not a concern. He awoke one night last week with a 104 degree temperature and a pain in his side, with the procedure performed shortly after arriving at Valley Care Medical Center Hospital in Pleasanton.
Chris Morris was the backup left guard for the Raiders last season and could open camp there with the first team, with other options being Paul McQuistan, Marcus Johnson and Jonathan Compas.