SANTA CLARA -– Defensive tackle Quinton Dial, who started the 49ers’ first 15 games, sat out Wednesday’s practice with a back strain that forced him out of Sunday's game against the Detroit Lions.

The 49ers (4-11) close out the regular season on Sunday against the St. Louis Rams (7-8) at Levi’s Stadium.

Linebacker Michael Wilhoite did not practice due to a high-ankle sprain that has sidelined him since Dec. 6. He is not expected to be available for Sunday's game.

Offensive lineman Marcus Martin returned to limited practice after missing one game with a concussion.

Earlier in the day, the 49ers placed running back Shaun Draughn on injured reserve with a knee injury and claimed tight end Je’Ron Hamm off waivers.

[MAIOCCO: 49ers claim tight end, place Draughn on IR]

Here are the participation reports for both teams from Wednesday's practices:

49ERS

Did not participate

LB Navorro Bowman (shoulder, finger)

DT Quinton Dial (back)

LB Michael Wilhoite (ankle)

Limited participation

DT Arik Armstead (shoulder, shin)

T Trenton Brown (knee)

C Marcus Martin (concussion)

RB Bruce Miller (foot)

T Erik Pears (knee)

S Eric Reid (hip)

T Joe Staley (knee, illness)

S Jaquiski Tartt (knee)

Full participation

CB Tramaine Brock (hamstring)

LB Ahmad Brooks (shoulder, back)

LB Eli Harold (finger)

CB Dontae Johnson (ankle)

WR Torrey Smith (back, foot)

RAMS

Did not participate

RB Todd Gurley (foot)

DT Nick Fairley (concussion)

S Mark Barron (concussion)

DT Doug Worthington (thigh)

Limited participation

DE Ethan Westbrooks (concussion)

CB Eric Patterson (ankle)

DT Michael Brockers (thigh)

T Andrew Donnal (knee)