It looks like the San Francisco 49ers will have to keep rookie safety Marcell Harris in the starting lineup, as veteran safety Jaquiski Tartt will miss his second straight game in Week 15 versus the Seattle Seahawks.

The San Francisco 49ers will get yet another longer look at rookie defensive back Marcell Harris in Week 15, as he'll likely wind up assuming the strong safety spot in the place of the injured Jaquiski Tartt, who is out for the second straight game with a shoulder injury and finds himself yet again on the Niners' inactive list.

Harris, who missed three tackles back in Week 13 versus the Seattle Seahawks, came on much stronger last week when the Denver Broncos were in town, making a number of open-field tackles on crucial third- and fourth-down conversion attempts in the second half of that game. With the Seahawks boasting a league-high 2,000 rush yards entering this contest, however, Harris will have to replicate his efforts from last week and avoid those he had up in Seattle.

On a good note, the 49ers should benefit from a healthy return of running back Matt Breida, who missed Week 14 after aggravating an ankle injury the previous week versus the Seahawks. Breida currently is tied for second in the NFL with an average of 5.6 yards per carry, and he'll look to rediscover some success against a Seahawks defense allowing an average of 5.0 yards per carry -- fourth worst in the league.

Here's the full list of San Francisco inactives for Week 15:

  • CB K'Waun Williams
  • S Jaquiski Tartt
  • RB Alfred Morris
  • S Tyree Robinson
  • OL Erik Magnuson
  • OL Shon Coleman
  • DL Sheldon Day

With Williams still dealing with an injury, it looks as if rookie defensive back D.J. Reed will continue to see time at nickel, while Day's placement suggests second-year pro D.J. Jones returns to a prominent role at nose tackle.

Such was the case last week versus the Broncos too.

The 49ers and Seahawks kick off on Dec. 16 at 4:05 p.m. ET from Levi's Stadium.
  • Peter Panacy
  • Written by:
    Peter Panacy has been writing about the 49ers since 2011 for outlets like Bleacher Report, Niner Noise, 49ers Webzone, and is occasionally heard as a guest on San Francisco's 95.7 FM The Game and the Niners' flagship station, KNBR 680. Feel free to follow him, or direct any inquiries to his Twitter account.