A closer look at how the Seahawks' NFC West rivals fared in Week 12 around the NFL:
Arizona Cardinals (9-2)
The Result
Arizona won its fifth straight game to maintain its three-game lead in the division over the Seahawks (6-5), netting a 19-13 road win over the division rival San Francisco 49ers.
What Happened
Cardinals quarterback Carson Palmer ran for the go-ahead 8-yard touchdown with less than three minutes to play and the Arizona defense stopped San Francisco's ensuing drive on fourth down to seal the win ... Palmer finished the day 24-of-40 for 271 yards and has now won 21 of his last 25 starts ... Wideout Larry Fitzgerald had 10 catches for 66 yards and John Brown added five grabs for 99 yards ... Defensive back Tyrann Mathieu led the way with 13 total tackles (one for loss), an interception, and two passes defensed.
Who's Hurt
Veteran running back Chris Johnson, who suffered a leg/knee injury in Sunday's win, was placed on injured reserve with a designation to return, meaning Johnson must sit out for at least the next eight weeks, putting a potential return at just prior to Super Bowl 50. Fellow running back Andre Ellington hurt his toe against the Niners and has his status in question this week, meaning rookie David Johnson is expected to take over as the starter. Cornerback Jerraud Powers strained his calf against San Francisco, but should be ready to go.
What's Next
The Cardinals travel to St. Louis in Week 13 for a meeting with the Rams at the Edward Jones Dome.
St. Louis Rams (4-7)
The Result
St. Louis lost its fourth game in a row, a 31-7 setback to the Bengals in Cincinnati.
What Happened
The Rams defense allowed Bengals quarterback Andy Dalton to complete 20-of-27 passes for 233 yards and three touchdowns and gave up 140 yards on the ground while the St. Louis offense couldn't get going behind quarterback Nick Foles, who finished 30-of-46 for 228 yards and three interceptions, one of which was returned 19 yards for a touchdown ... Wide receiver Tavon Austin scored the Rams' only touchdown of the day on a 5-yard run in the second quarter.
Who's Hurt
Case Keenum, who didn't play against the Bengals because of a concussion he suffered the week prior, should return to the starting quarterback role this week.
What's Next
The Rams host the Cardinals in Week 13 at St. Louis' Edward Jones Dome.
San Francisco 49ers (3-8)
The Result
San Francisco lost its second straight game, falling 19-13 to the division-leading Cardinals at Santa Clara's Levi's Stadium.
What Happened
The Niners defense gave up a fourth quarter touchdown run to Cardinals quarterback Carson Palmer and San Francisco signal caller Blaine Gabbert couldn't orchestrate a comeback in the game's final two minutes, connecting 18 yards with wide receiver Anquan Boldin on a fourth-and-20 play to end the game ... Gabbert finished the day 25-of-36 for a career-high 318 yards, one touchdown, and one interception ... The Niners offense went 0-of-9 on third down, the first time San Francisco has failed to convert a single third-down try since 2010 ... Boldin led all 49ers pass catchers with eight grabs for 93 yards ... Tight end Vance McDonald had six catches for 71 yards and a touchdown.
Who's Hurt
Tight end Garrett Celek was carted off the field in the first quarter with a high ankle sprain and did not return.
What's Next
The 49ers head to Chicago for a Week 13 battle with the Bears at Soldier Field.
The Seahawks finished out their three-week home stand with a thrilling 39-30 win over the Pittsburgh Steelers and team photographer Rod Mar documented the excitement from pregame to postgame in this week's photo essay.

Cornerback Richard Sherman was all business as he walked into the locker room before the game.

Quarterback Russell Wilson woke up at 5:30 a.m. on game day feeling ill, but he didn't let it affect his play or his interactions with fans before the game.

After pregame warmups, young defensive backs DeShawn Shead and Marcus Burley talk strategy while Kam Chancellor listens to music.

Defensive backs take part of their traditional pregame huddle before taking the field for warmups.

Frank Clark waits in the locker room for game time.

Defensive end Brandon Mebane spoke to the team just moments before they took the field for the game with the Pittsburgh Steelers.

Tight end Jimmy Graham leaps skyward as he is introduced during pregame.

Captains for both teams were joined by Honorary Captain and former Seahawk defensive back Eugene Robinson, who wore his number 41.

Richard Sherman pumps up his teammates seconds before the teams took the field for kickoff.

Seattle's crowd noise forced Pittsburgh quarterback Ben Roethlisberger to work hard to communicate with his teammates.

This fan showed her dedication to both teams playing on Sunday.

Cornerback Jeremy Lane, playing for the first time since being injured intercepting a pass in the Super Bowl, lost no time in picking off another, this time on a failed fake field goal by the Steelers at the start of the second quarter.

Seahawks cornerback Jeremy Lane races 54 yards with an interception return as Pittsburgh's Alejandro Villeneuve tries to pursue.

12s were well aware of cornerback Jeremy Lane's return to action after being injured in last season's Super Bowl.

Thomas Rawls, once again starting in place of the injured Marshawn Lynch, leaps through a hole at the line of scrimmage

Seahawks receiver Doug Baldwin points skyward after his 16-yard touchdown reception from Russell Wilson gave Seattle a 7-3 lead.

This 12 was in the holiday spirit even though the calendar still read November.

Quarterback Russell Wilson stood tall in the pocket and fired strikes all over the field against Pittsburgh. Wilson celebrated his 27th birthday by throwing for 345 yards and five touchdowns with no interceptions.

Quarterback Russell Wilson celebrates with receiver Doug Baldwin after they connected on the first of three passing touchdowns on the afternoon.

Seahawks fans in the south end zone wished a happy birthday to quarterback Russell Wilson, who threw five touchdown passes on his 27th birthday.

Seattle tight end Jimmy Graham fights off Pittsburgh's Ross Cockrell for an 18-yard gain and a first down.

Receiver Jermaine Kearse gestures after one of his four catches, two of which resulted in touchdowns.

At halftime, head coach Pete Carroll spoke with cornerback Marcus Burley in the locker room.

Seahawks defensive end Frank Clark sacks Steelers quarterback Ben Roethlisberger in the second half.

Seattle's Jimmy Graham battles with Pittsburgh's Ross Cockrell near the end zone on a pass from Russell Wilson.

Jimmy Graham uses his size and strength to outmuscle Pittsburgh's Ross Cockrell and makes a juggling catch for a 36-yard reception to the one-yard line.

Jimmy Graham is pumped up and gets the crowd pumped up after his juggling catch to the one-yard line set up a Seattle touchdown.

Running back Thomas Rawls jumps and celebrates after pounding home a one-yard touchdown to give Seattle a 32-30 lead.

Fans in the south end zone roar as the Seahawks fought to protect a fourth quarter lead.

Richard Sherman has plenty of room to run after a fourth quarter interception, which he returned for 26-yards to set up a Seattle touchdown.

On the Seahawks sideline, cornerback Richard Sherman makes a point to teammates between defensive series.

Seahawks tight end Jimmy Graham reaches out to try to make a play on a pass from Russell Wilson in the end zone as Pittsburgh's Antwon Blake defends. Graham injured his knee on the play.

Teammates and head coach Pete Carroll huddle around injured Jimmy Graham after the tight end was injured trying to catch a pass in the end zone in the fourth quarter.

The Seahawks defensive line kept battling and finally got to Pittsburgh quarterback Ben Roethlisberger with Bruce Irvin and Michael Bennett combining on this play.

12s brought the noise during the last of three straight home games at CenturyLink Field. The Seahawks play on the road for the next two weeks.

Seahawks receiver Doug Baldwin heads upfield and applies a stiff-arm to Pittsburgh's Anton Blake on his way to an 80-yard touchdown that sealed Seattle's victory.

Seahawks receiver Doug Baldwin sails into the end zone at the end of his 80-yard touchdown catch-and-run, helped by a block by teammate Tyler Lockett (16) on Pittsburgh's Anton Blake (41).

Seahawks receivers Jermaine Kearse and Doug Baldwin celebrate with fans after Baldwin's 80-yard touchdown from Russell Wilson in the fourth quarter. The two receivers accounted for five touchdown receptions.

Seahawks safety Kam Chancellor leaps high to intercept a pass intended for Pittsburgh's Martavis Bryant late in the game to help seal the win.

Strong safety Kam Chancellor rests on the bench after his interception.

Defensive backs Earl Thomas and Richard Sherman shake hands on the sidelines as the clock runs out on Seattle's 39-30 win over the visiting Pittsburgh Steelers.

Cornerback Jeremy Lane is congratulated by defensive coordinator Kris Richard just after the final whistle of the Seahawks win over the Steelers at CenturyLink Field.

In the locker room, after most of the players had left, safety Earl Thomas and head coach Pete Carroll were still breaking down the day's events.

Wide receiver Doug Baldwin left the locker room with the three footballs he caught for touchdowns on the afternoon. Asked by the media when the last time he'd scored three TD's in a game, Baldwin answered, "Little league, probably".