49ers fullback Kyle Juszczyk is expected to be sidelined for most of the remainder of training camp with a hamstring strain.
Meanwhile, the 49ers took preventive measures on Wednesday with tight end George Kittle. When Kittle began feeling tightness in his hamstring, the club pulled him out of practice for the final 30 minutes to work on a side field with the strength and conditioning staff.
“(Kittle) checked out all right, but we took him out of there before something bad happened,” coach Kyle Shanahan said Thursday after the 49ers held a walk-through rather than their scheduled fully-padded practice in Santa Clara.
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A four-time Pro Bowl performer, Juszczyk is listed as "week to week" with a hamstring strain he sustained in practice this week, Shanahan said.
Juszczyk did not practice on Wednesday. The 49ers expect him to be ready for the regular-season opener on Sept. 13 against the Arizona Cardinals at Levi's Stadium.
Undrafted rookie Josh Hokit of Fresno State is the only other fullback in camp with the team. He has been active during practices, showing his ability to catch passes out of the backfield. Hokit made one of the memorable plays in a recent practice when he knocked over linebacker Kwon Alexander en route to the end zone after catching a short pass in the red zone.
RELATED: 49ers reduce practice to walk-through while battling multiple injuries
San Francisco 49ers
In other injury news, the 49ers expect to get reserve tight end Ross Dwelley back on the practice field next week after missing several days with a foot injury. Safety Marcell Harris, who recently rolled an ankle, is likely to return to practice on Friday.
Guard Ross Reynolds, who was carted off the practice field on Sunday, sustained a bone bruise to his leg. Shanahan said he does not expect Reynolds to be out of action for a significant period of time.