Jauan Jennings Injury: No activity at Tuesday's practice

Head coach Kyle Shanahan said that Jennings (ankle/ribs) won't participate in Tuesday's walk-through practice, Matt Maiocco of NBC Sports Bay Area reports.

Jennings previously sat out the 49ers' Week 3 win over the Cardinals due to an ankle issue, and that injury plus a new rib concern is clouding his availability for Thursday's game against the Rams. After being gauged as a non-participant on Monday's estimated practice report, Jennings will be a spectator Tuesday in the 49ers' lone on-field session this week. The 49ers will decide Wednesday whether Jennings takes a designation into the Week 5 contest, or if he'll be ruled out in advance of the game. The San Francisco pass-catching corps could once again be shorthanded with Jennings, Ricky Pearsall (knee) and Jordan Watkins (calf) all sitting out Tuesday's practice, while tight end George Kittle (hamstring) and Brandon Aiyuk (knee) aren't on track to return from IR until at least Week 6.