Chargers injury updates: Justin Jackson, Mike Williams, Rashawn Slater

Following the preseason opener against the Rams, the Chargers returned to the practice field on Monday to prepare for their joint practices and preseason matchup with the 49ers this week.

Los Angeles remained relatively healthy coming off this past weekend, but players were still banged up.

Running back Justin Jackson, who sustained a groin injury, did not participate and he is not expected to be available this week, either.

Wide receiver Mike Williams has been dealing with a hip flexor injury and is expected to miss the two joint practices.

Offensive tackle Rashawn Slater did not practice today due to some tightness in his lower back, but the plan is for him to be ready for later this week.

Long snapper Cole Mazza suffered a shoulder injury and was wearing a sling at practice Monday. As insurance, the Chargers signed veteran Matt Overton.

Cornerback Ryan Smith, who has missed nearly the entire summer with a core injury, might not be ready for the start of the regular season.