Tomlinson, who jammed his right big toe in the season-opening loss to Carolina, missed practice the previous two days.
"It went OK," Tomlinson said. "I did what I wanted to do. I didn't expect to do full participation but I wanted to get out and do some stuff running the football. It definitely is a lot better than last week. That's the exciting part about it.
"But at that same time, I'm going to be realistic about it. I'm pretty sure on Monday, I'll probably still have a little problem with it but it will be a week better."
Tomlinson aggravated the toe during the second quarter of Sunday's loss to Denver. Reserve Darren Sproles started the second half, though Tomlinson did see limited action during the final two quarters.
Coach Norv Turner said Tomlinson was "limited" during Friday's practice. Turner said he isn't sure how much Tomlinson will be able to contribute.
"I don't think you know until you get into the game, and that's why you have to have flexibility in your plan," the coach said.
One thing working in Tomlinson's favor is an extra day of recovery time.
"It will give me some more time. That's why I definitely think I'll feel a lot better," Tomlinson said. "What's the percentage? I'm not sure. We'll have to wait and see."
The Chargers also listed left tackle Marcus McNeill as questionable. McNeill missed each of the first two games because of a neck injury.
Center Nick Hardwick (foot) will miss his third straight game.