SANTA CLARA, Calif. -- For the fourth straight week, the San Francisco 49ers clawed out a victory but were unable to come out of the game against the Denver Broncos without injury concerns.
On Sunday, the Niners lost fullback Kyle Juszczyk (knee), safety Marques Sigle (ankle) and slot cornerback Upton Stout (shoulder) to ailments that did not allow them to finish the game.
After the 24-14 victory, coach Kyle Shanahan offered updates on all three with further evaluation to come.
"Juice ... they're thinking it was probably a knee sprain," Shanahan said. "[The] ACL and stuff looked intact, but we'll have to find out tomorrow. Stout, they're guessing an AC [sprain], but we won't know for sure until tomorrow. And Sigle, they're not sure. They just thought an ankle."
At first blush, Juszczyk's injury appeared to be the most concerning. With 14:03 to go, Niners quarterback Brock Purdy scrambled to his left and found Juszczyk open down the sideline for a 16-yard gain. Broncos defensive back Jahdae Barron delivered a big hit to Juszczyk's knee and midsection, and Juszczyk stayed down for a few minutes as the Niners medical team rushed to help.
Niners personnel helped Juszczyk to the sideline, where he entered the medical tent and stayed for a bit before watching the rest of the game on the bench. The 49ers quickly ruled out a potential return for Juszczyk, who finished with two catches for 28 yards.
Sigle suffered a pair of injuries Sunday, initially departing early in the third quarter with a stinger. He returned on Denver's next possession but was injured with 2:15 left when he hurt his ankle near Denver's sideline. He did not return after making six tackles on the day.
Stout hurt his shoulder in the third quarter and jogged to the locker room to be evaluated soon after Juszczyk's injury early in the fourth. Stout returned with 2:07 to go but then left again and did not play during the Broncos' final few snaps. He also finished with six tackles.
Shanahan said Juszczyk, Sigle and Stout will have further tests done Monday.