Tight end Antonio Gates (ribs) and running back Ryan Mathews (clavicle) practiced Wednesday, and both are expected to play Sunday against the Falcons.

Gates was sidelined against the Titans last weekend for an injury suffered in the Sept. 10 season opener. He dealt with soreness, the team said, and was a game-time decision.

Three catches shy of 600 for his career, the eight-time Pro Bowler was a limited participant Wednesday.

Head coach Norv Turner said Gates was "moving fast" and "looked good," adding how his body responds will determine his practice activity level Thursday.

Gehlken believes Mathews is poised to make his season debut Sunday. He's been out since breaking his clavicle Aug. 9 on his first preseason carry.

He saw his normal reps at Wednesday's practice and is expected to have another full practice Thursday when the Chargers work in pads.

"I feel great, I feel healthy, and I feel strong," Mathews told Gehlken. "I think (the coaches) know what I can do. I know they know I'm ready. It's a long season, and they're going to be real smart with me. Really, it's just taking it day by day and seeing whether I go Saturday when they make that final decision. ..."

Tight end Dante Rosario (calf) and wide receiver Eddie Royal (shoulder) were the Chargers' only reported injuries from their 38-10 win over Tennessee. Both practiced Wednesday.

Royal went full, and Rosario was limited.

Running back Curtis Brinkley didn't finish Wednesday practice. His knee was a "little tender," said Turner, who expected Brinkley to practice Thursday.