49ers DE Demarcus Dobbs has been seeing snaps at tight end in minicamp. Dobbs saw limited snaps after making the 49ers as an undrafted free agent last season, but was used on kickoff coverage in the playoffs. He boasts impressive athleticism for his 6-foot-6, 275 pound frame, but it's doubtful he'd be used as more than an extra blocker if he sees time on offense.