The San Francisco 49ers will be without a starter on defense against the Seattle Seahawks Sunday at Levi’s Stadium. Safety Jaquiski Tartt was ruled out Friday by coach Kyle Shanahan Matt Breida Jersey , while a handful of players are listed as questionable for the 49ers’ Week 15 matchup.Tartt’s ailing shoulder continues to torment the 49ers’ safety, who’ll be on the sideline for the second consecutive week. Sunday will be Tartt’s sixth missed game of 2018.Marcell Harris made his second start of the season in Tartt’s place last week against the Broncos, racking up seven tackles and two tackles for loss. His highlight play came on a fourth-quarter, fourth-down stop in which Broncos quarterback Case Keenum targeted running back Phillip Lindsay in the flat. Harris made the open field tackle and held Lindsay short of the line to gain, stifling the Broncos’ comeback hopes.It was an excellent rebound for the 49ers’ rookie safety after a rough debut against the Seahawks in Week 13, missing three tackles and contributing to the defense giving up a season-high 168 rushing yards at Century Link Field.Antone Exum Jr. will likely start at free safety along with Harris.Receivers Marquise Goodwin and Dante Pettis are listed as questionable for Sunday. Both were limited for Wednesday and Thursday’s practice with calf and foot injuries, respectively. Tight end George Kittle, coming off a 210-yard performance against the Broncos, figures to shoulder the 49ers’ offense whether Goodwin and Pettis are active or not. In addition to Kittle, second-year receivers Kendrick Bourne and Trent Taylor may also see an increased role.Running back Matt Breida is among the list of questionable players for Sunday as he steadily recovers from the ankle injury that’s plagued him for most of the season. Rookie undrafted free agent Jeff Wilson has filled in admirably for Breida, racking up 45 carries for 184 yards over the past three weeks, as well as 10 receptions for 87 yards. He’s likely to have another major role against the Seahawks.Cornerback K’Waun Williams Trent Taylor Color Rush Jersey , after missing last week’s matchup with a knee injury, is also questionable for Week 15. Rookie defensive back D.J. Reed started in Williams’ place last week and lit up the stat sheet, amassing 12 total tackles, adding three tackles for loss, one sack, one quarterback hit and one forced fumble. It’ll be interesting to see how the 49ers handle Williams’ status, even if healthy. Reed will be hard to keep off the field.49ers final injury reportOut: S Jaquiski Tartt (shoulder)Questionable: RB Matt Breida (ankle), WR Marquise Goodwin (calf), DE Cassius Marsh (concussion), LB Mark Nzeocha (groin), WR Dante Pettis (foot), CB K’Waun Williams (knee)Seahawks final injury reportOut: S Maurice Alexander (concussion) https://www.49ersfanshop.com/Adrian-Colbert-Jersey , RB Rashaad Penny (knee), LB K.J. Wright (knee)Doubtful: G D.J. Fluker (hamstring)Questionable: WR Doug Baldwin (hip), S Bradley McDougald (knee), DT Jarran Reed (oblique) They’ve gotten better in his rankings each year, but still have a ways to go, according to Barnwell." San Francisco 49ers NewsNFL Power RankingsESPN’s Bill Barnwell ranks the 49ers offensive skill groupNew,42commentsThey’ve gotten better in his rankings each year, but still have a ways to go, according to Barnwell.PDTShare this storyShare this on FacebookShare this on TwitterShareAll sharing optionsShareAll sharing options for:ESPN’s Bill Barnwell ranks the 49ers offensive skill groupTwitterFacebookRedditPocketFlipboardEmailPhoto by Michael Zagaris/San Francisco 49ers/Getty ImagesLast Thursday, NFL.com ranked every team’s offensive “triplets” around the league. The San Francisco 49ers were listed as a bottom-five trio. That was so wrong our own Mark Salveit followed up with a piece about it on Friday.What if we opened it up to the entire skill position group? How much would the 49ers improve? ESPN’s Bill Barnwell did just that. Unfortunately, the Niners still found themselves in the ‘20s. For whatever it’s worth, the team was ranked 31st in 2017 Dante Pettis Jersey , and 26th in 2018. This year they’re up to 24, according to Barnwell. Yay?The strength in numbers couldn’t have been too strong if the Niners are in the bottom half of the rankings. Barnwell has a fair point on health. Even if that was the first serious injury of Dante Pettis’ career, we have to see him play a full season.I would say the most significant difference between the 49ers and the Bills is that the Niners have a group of wide receivers that can get open. They might not be household names, my goodness, Bill. Zay Jones is Quinton Patton redux. Kelvin Benjamin would be Jalen Hurd if Hurd were 20 pounds heavier without the athleticism. I could go on and on, but there is no comparison to the teams. It also feels like Barnwell is selling short the impact of Matt Breida, Tevin Coleman, and Jerick McKinnon to a lesser degree. As always, though, it comes back to the quarterback. Garoppolo has a chance to make all these rankings look silly by performing to the level we know he’s capable of. He’s shown glimpses; now we need to see it for 16 games.