Chargers not concerned about labels, just performance, at safety

SAN DIEGO -- Free agency and the draft are now in the rearview mirror for the San Diego Chargers, and rookies will practice with veterans during offseason workouts for the first time on Monday.

With that in mind, now's a good time to take a couple questions about the upcoming season and how San Diego's roster is shaping up. We'll make this a weekly feature during the offseason leading up to training camp at the end of July.

Let's get to your questions:

@eric_d_williams: If the season started today, Jahleel Addae would be listed as the team's starting strong safety and Dwight Lowery as San Diego's starting free safety.

However, the way secondary coach Ron Milus and defensive coordinator John Pagano run their scheme, the two safeties are interchangeable, and both called upon to do similar things in San Diego's defense. So the strong safety/free safety labels don't matter much.

"On the depth chart it says strong safety and free safety, but we're really interchangeable," Addae said. "And even when Eric Weddle was here, sometimes we were like, ‘Ok, you've got this blitz, you've got this coverage and I'll stay back.'

"So it really wasn't free safety and strong safety. We both know the playbook. Darrell Stuckey, Dwight, AP (Adrian Phillips) -- even Dexter McCoil, he's coming along and learning well. We all know the playbook."

As Addie mentioned, McCoil has been impressive so far. At 6-4 and 220 pounds, McCoil can cover like a safety and also play in the box as a linebacker, so the former CFL standout offers some versatility. I'll have more on McCoil in a story next week.

@eric_d_williams: The Chargers had four undrafted rookies make the roster last year in kicker Josh Lambo, receiver Tyrell Williams, tackle Tyreek Burwell and inside linebacker Nick Dzubnar, so it's certainly possible that an undrafted player fights their way onto the back end of the roster in 2016.

A couple names to keep an eye on include receiver Dom Williams. A product of Washington State University, Williams ran a 4.38-second, 40-yard time and posted a 40.5-inch vertical at his pro day. Williams left WSU ranked third all-time with 192 catches, second all-time with 2,889 yards and second all-time with 30 touchdown catches. Williams made a couple nice plays during rookie minicamp.

University of Houston safety Adrian McDonald ranks first in school history with 17 career interceptions. The undrafted rookie was a 2015 Jim Thorpe Award Semifinalist, given to the nation's top defensive back. However, at 5-9 and 190 pounds, McDonald will have to play bigger than his size.

Chris Swain from the Naval Academy has good size at 6-foot and 249 pounds, and could fight for a roster spot at fullback.