54 Cassius Marsh DE

Marsh exited practice early Friday due to a groin injury, the San Francisco Chronicle reports.

The extent of Marsh's injury hasn't been revealed, so it's best to consider him day-to-day unless something suggests otherwise. Assuming the issue doesn't cost him regular-season action, March should rotate in on the defensive line for the 49ers in 2018 after playing a career-high 457 defensive snaps last season.

The 49ers re-signed Marsh to a two-year contract Wednesday.

A late-season waiver pickup for the 49ers, Marsh upgraded the team's dormant pass rush over the final six games of 2017, providing two sacks and 11 tackles. He also established himself as a mainstay on the team's kick-coverage and return units, with only Dekoda Watson playing more snaps on special teams from Week 12 onward. Look for the 25-year-old to rotate in regularly on defense and play a prominent role on special teams again in 2018.

The 49ers claimed Marsh off waivers Wednesday, Matt Maiocco of NBC Sports Bay Area reports.

After being let go by the Patriots on Tuesday, Marsh didn't take long to find a new home. He'll likely work as a rotational defensive end for the 49ers, which may only net him only a handful of snaps most weeks.

Marsh was released by the Patriots on Tuesday, Field Yates of ESPN reports.

Marsh was traded to the Patriots this past offseason. In nine games with the team, Marsh totaled 19 tackles and a sack. He hasn't seen much action over the past few weeks and will likely cede most of his duties as a reserve defensive lineman to the recently signed Ricky Jean Francois.

Marsh (shoulder) is active for Sunday's game against the Raiders.

Marsh was listed as questionable after being a limited participant at practice this week. The 25-year-old should serve as the primary reserve defensive end for the Patriots on Sunday.