The San Francisco 49ers are preparing for their Week 7 contest against the Washington Redskins on Sunday at FedExField in Landover, Maryland.

RB Raheem Mostert was a surprise injury on Wednesday's practice report. He is day-to-day with a knee sprain, said head coach Kyle Shanahan.

As expected, the 49ers were without WR Deebo Samuel (groin) and DT D.J. Jones (hamstring) during Wednesday's practice. Both players were injured during Sunday's win over the Los Angeles Rams. Samuel was seen doing some light running, though.

Shanahan said both Samuel and Jones would be "questionable" this week and their statuses are day-to-day.

TE George Kittle also didn't practice as he continues to deal with a groin injury. He did, however, stretch with his teammates. Kittle was listed as "questionable" against the Rams but ended up playing and racking up eight catches for 103 yards.

DB K'Waun Williams (hand) practiced in a blue no-contact jersey.

The 49ers' injured tackles, Joe Staley (fibula) and Mike McGlinchey (knee) were seen rehabbing on a side field.

Below are Wednesday's practice participation reports for both the 49ers and Redskins, which were provided by the 49ers Communications staff.

San Francisco 49ers Wednesday Practice

Did Not Participate In Practice
DT DeForest Buckner (not injury related), DT D.J. Jones (hamstring), FB Kyle Juszczyk (knee), TE George Kittle (groin), T Mike McGlinchey (knee), RB Raheem Mostert (knee), WR Deebo Samuel (groin), T Joe Staley (fibula), CB Ahkello Witherspoon (foot)

Limited Participation in Practice
DE Dee Ford (quadricep), CB K'Waun Williams (hand)

Washington Redskins Wednesday Practice

Did Not Participate In Practice
S Deshazor Everett (ankle), LB Josh Harvey-Clemons (hamstring), QB Case Keenum (right shoulder, foot), G Wes Martin (chest), CB Josh Norman (thigh, hand), RB Adrian Peterson (quadricep), RB Chris Thompson (toe)

Limited Participation in Practice
TE Vernon Davis (concussion), T Donald Penn (not injury related)