The San Francisco 49ers are preparing for their Week 15 contest against the Seattle Seahawks on Sunday at Levi's Stadium in Santa Clara, California.

Wednesday injury notes:

  • Running back Matt Breida was limited during practice after missing all of last week and being ruled out early for the 49ers' game against the Denver Broncos.
  • Safety Jaquiski Tartt, who also missed all of last week and did not play against Denver, did not practice.
  • Defensive end Cassius Marsh remains in the concussion protocol and did not practice.
  • Linebacker Malcolm Smith continues to be plagued by an Achilles injury and was limited in practice. He was active against Denver but did not play.

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

San Francisco 49ers Wednesday Practice

Did Not Participate In Practice
DE Cassius Marsh (concussion), LB Mark Nzeocha (groin), T Joe Staley (not injury related), S Jaquiski Tartt (shoulder), CB K'Waun Williams (knee)

Limited Participation in Practice
RB Matt Breida (ankle), DT D.J. Jones (back), C Weston Richburg (knee), LB Malcolm Smith (Achilles), G Laken Tomlinson (hip)

Seattle Seahawks Wednesday Practice

Did Not Participate In Practice
SS Maurice Alexander (concussion), WR Doug Baldwin (hip), T Duane Brown (not injury related), G/T D.J. Fluker (hamstring), DE Dion Jordan (knee), FS Bradley McDougald (knee), RB Rashaad Penny (knee), DT Shamar Stephen (foot), LB K.J. Wright (knee)

Limited Participation in Practice
RB Chris Carson (not injury related), DE Frank Clark (elbow), DT Jarran Reed (oblique)

Full Participation in Practice
FB Tre Madden (chest)