Raiders WR Duke Calhoun and LB Mario Kurn are both done for the season with torn right ACLs. Calhoun is a former undrafted free agent out of Memphis. Kurn went undrafted this year out of the University of San Diego, where Jim Harbaugh once coached.

Raiders signed WR Duke Calhoun, formerly of the Giants. Calhoun tried out for the team during voluntary minicamp this week. The former Memphis star was a coaching staff favorite in New York the past two years, but a hamstring injury hurt his chances of making the roster last September. He'll vie for a spot in Oakland.

Giants waived/injured WR Duke Calhoun. The former Memphis star had been battling a hamstring injury. A coaching staff favorite last season, Calhoun had fallen down the depth chart as better special teamers emerged.