49ers coach Kyle Shanahan said WR Jacob Cowing suffered a hamstring injury in Wednesday’s practice.
Cowing was a rising star during the 49ers’ spring practices, drawing praise from reporters including The Athletic’s Vic Tafur, who said he could take over some of Deebo Samuel’s vacant gadget touches. Now Cowing will join Brandon Aiyuk and Ricky Pearsall on the sidelines. Aiyuk is recovering from a torn ACL and isn’t expected to be ready for Week 1. Pearsall is dealing with a lingering hamstring issue but isn’t expected to miss much time. Despite airing his desire for a new contract publicly, Jauan Jennings showed up to practice and fully participated on Wednesday, putting any notions of a “hold-in” to bed. If the 49ers can’t field a healthy receiving corps around him, Jennings will project for a gaudy target share out of the gates.