“I don’t know,” 49ers coach Kyle Shanahan told reporters after practice. “I’ll hear about it later today with anybody who goes out of practice, but that’s why I know he went out. That’s what he had in OTAs, so I’m sure it’s similar.”

Wide receiver Jauan Jennings left Sunday's practice early because of a calf issue. It's the second time this offseason he's dealt with a calf problem. Jennings also had a calf ailment in OTAs according to the San Francisco Chronicle's Eric Branch.