Here are 16 things to know about the San Francisco 49ers three divisional foes entering Week 15.*
1. The Arizona Cardinalsneeded the Kansas City Chiefs to turn the ball over twice in enemy territory in the second half to finish off a 17-14 home win on Sunday.
- With running back Andre Ellington unavailable, Kerwynn Williams stepped to the forefront with 19 carries for 100 yards. Williams had been on the scout team, mimicking Chiefs running back Jamaal Charles all week. Look for him and Stepfan Taylor (six carries, 19 yards) to carry the load.
- Starting cornerback Antonio Cromartie (lower leg) was carted off of the field on Sunday and was set to have an MRI on Monday, though his injury may not be season-ending.
- Arizona will need a consistent kicker down the stretch, and rookie Chandler Catanzaro had been that all season before missing two of three field-goal attempts on Sunday. He is 22-of-26 overall on three-point tries.
- The Cardinals beat the next team on this list, 31-14, in Week 8, but that seems so long ago. They meet again on Thursday night.
6. The St. Louis Rams recorded a second straight shutout for the first time since 1945, dominating host Washington, 24-0, on Sunday.
- St. Louis' stifling defense recorded seven sacks, including 1.5 by defensive end Robert Quinn, who has sneakily racked up 10.5 overall.
- NFL.com's Chris Wesseling dubbed the Rams "a franchise quarterback away from contending for the NFC West in 2015." For yet another offseason, they'll wonder is Sam Bradford is the man for the job.
- Veteran Shaun Hill is probably not the answer, but he has given the team steady play during their current two-game winning streak. He was 16-of-22 passing for 213 yards and two touchdowns on Sunday.
- After facing the Cardinals on Thursday night, the Rams have another winnable home game in Week 16, as they face the 4-9 New York Giants.
- San Francisco would like to see St. Louis beat Arizona for obvious reasons.
12. The Seattle Seahawks won a third straight game on Sunday, besting the 9-4 Philadelphia Eagles, 24-14, in a tough road environment.
- Quarterback Russell Wilson's comfort in the pocket (263 yards passing, two touchdowns) and improvisational skills out of it (10 carries, 48 yards) seem to have righted the offense.
- A 2013-like defense helps, too: Seattle limited a Chip Kelly-designed attack to nine first downs and...
15. The Seahawks welcome the 49ers to CenturyLink Field on Sunday in the first of three divisional matchups to finish their regular season slate.
- Of the three NFC West teams with postseason hopes still alive, Seattle is the healthiest.