The San Francisco 49ers will face the Buffalo Bills in Week 13. Here’s the latest fantasy football news and advice to help you with your lineups this week and moving forward, especially regarding RB Jordan Mason.
Is Jordan Mason Playing in Week 13?
Mason is not listed on the injury report this week, so barring any setbacks, he is on track to play this weekend.
We’ll continue to monitor the 49ers injury report. You can also visit and bookmark our NFL Injury Tracker and Fantasy News Tracker for the latest updates.
Should You Start or Sit Jordan Mason in Week 13?
Mason has been on the field for just 8.5% of San Francisco’s offensive snaps since Christian McCaffrey returned and has no path to earning more work outside of an injury to the team’s starter.
With their season on the line, the 49ers are likely to ride McCaffrey as hard now as ever, and while that doesn’t mean anything for Mason this week, every touch added to a role increases health risk; that is why I’d hold onto Mason if you have the space as we prepare for the stretch run.
If the 49ers fall this week, do they try to manage McCaffrey and make sure he leaves the season in one piece? That might be overthinking things, but it’s possible, and that would make Mason an impact player during the fantasy postseason.
Are you looking for start/sit advice for other players in your lineup? Read our Week 13 Fantasy Start-Sit Advice Cheat Sheet for every fantasy-relevant player in every game.
Jordan Mason’s Fantasy Points Projection in Week 13
As of 8 AM ET on Sunday morning, Mason is projected to score 7.4 fantasy points in PPR formats. This includes 9.1 rushing attempts for 47.6 yards and 0.3 touchdowns. It also includes 0.6 receptions for 5.3 yards and 0 touchdowns.
Check out the free PFN Fantasy Start-Sit Optimizer for the latest projections and advice for your lineups this week.
PFN Insight on the Bills' Defense
We always thought this would be a rebuilding year for the Buffalo Bills defense, and so far, it's proven to be the case. After finishing as a top-seven defense in each of the last three seasons, Buffalo has dropped outside the top 10 this year.
Still, it hasn't been as bad as feared, with just three weeks ranking outside the top 20 and six weeks inside the top 12.
The Bills have excelled this year in forcing turnovers, ranking second. They are also a top-10 unit against the run, although they are below average against the pass.
One solid element has been Buffalo's red-zone defense, allowing touchdowns on just 51.3% of trips (12th), meaning they are allowing just 1.84 points per drive (ninth).
We've seen frailties against good offenses, such as the Cardinals, Ravens, Dolphins, and Chiefs. That could present a potential issue when the competition level improves in the playoffs.
For more insight on all other team defenses, head to our PFN Defense+ Metric Analysis.
Jordan Mason’s Fantasy Ranking
Our Weekly Consensus PPR Rankings are below — both positional and overall. They were last updated at 10:30 AM ET on Sunday, December 1. If you're in a Superflex league, make sure you check out our Weekly Consensus Superflex Rankings.
Week 13 RB PPR Rankings
1) De'Von Achane | MIA (at GB)
2) Saquon Barkley | PHI (at BAL)
3) Joe Mixon | HOU (at JAX)
4) Christian McCaffrey | SF (at BUF)
5) Bijan Robinson | ATL (vs. LAC)
6) Derrick Henry | BAL (vs. PHI)
7) Jahmyr Gibbs | DET (vs. CHI)
8) Jonathan Taylor | IND (at NE)
9) Kyren Williams | LAR (at NO)
10) Breece Hall | NYJ (vs. SEA)
11) James Conner | ARI (at MIN)
12) Josh Jacobs | GB (vs. MIA)
13) David Montgomery | DET (vs. CHI)
14) Kenneth Walker III | SEA (at NYJ)
15) James Cook | BUF (vs. SF)
16) Alvin Kamara | NO (vs. LAR)
17) Chase Brown | CIN (vs. PIT)
18) Aaron Jones | MIN (vs. ARI)
19) Bucky Irving | TB (at CAR)
20) Najee Harris | PIT (at CIN)
21) Chuba Hubbard | CAR (vs. TB)
22) Tyrone Tracy Jr. | NYG (at DAL)
23) Tony Pollard | TEN (at WAS)
24) Brian Robinson Jr. | WAS (vs. TEN)
25) Rico Dowdle | DAL (vs. NYG)
26) Kareem Hunt | KC (vs. LV)
27) D'Andre Swift | CHI (at DET)
28) Rhamondre Stevenson | NE (vs. IND)
29) Travis Etienne Jr. | JAX (vs. HOU)
30) Gus Edwards | LAC (at ATL)
31) Rachaad White | TB (at CAR)
32) Nick Chubb | CLE (at DEN)
33) Tank Bigsby | JAX (vs. HOU)
34) Jeremy McNichols | WAS (vs. TEN)
35) Jaylen Warren | PIT (at CIN)
36) Isiah Pacheco | KC (vs. LV)
37) Javonte Williams | DEN (vs. CLE)
38) Tyler Allgeier | ATL (vs. LAC)
39) Audric Estimé | DEN (vs. CLE)
40) Roschon Johnson | CHI (at DET)
41) Justice Hill | BAL (vs. PHI)
42) Ray Davis | BUF (vs. SF)
43) Jaylen Wright | MIA (at GB)
44) Jerome Ford | CLE (at DEN)
45) Ameer Abdullah | LV (at KC)
46) Cam Akers | HOU (at JAX)
47) Trey Benson | ARI (at MIN)
48) Raheem Mostert | MIA (at GB)
49) Devin Singletary | NYG (at DAL)
50) Braelon Allen | NYJ (vs. SEA)
51) Emanuel Wilson | GB (vs. MIA)
52) Zach Charbonnet | SEA (at NYJ)
53) Jonathon Brooks | CAR (vs. TB)
54) Jordan Mason | SF (at BUF)
55) Samaje Perine | KC (vs. LV)
56) Jaleel McLaughlin | DEN (vs. CLE)
57) Tyjae Spears | TEN (at WAS)
58) Blake Corum | LAR (at NO)
59) Antonio Gibson | NE (vs. IND)
60) Keaton Mitchell | BAL (vs. PHI)
61) Dylan Laube | LV (at KC)
62) Kenneth Gainwell | PHI (at BAL)
63) Sean Tucker | TB (at CAR)
64) Khalil Herbert | CIN (vs. PIT)
65) Dare Ogunbowale | HOU (at JAX)
66) Ezekiel Elliott | DAL (vs. NYG)
67) JaMycal Hasty | NE (vs. IND)
68) Jamaal Williams | NO (vs. LAR)
69) Isaac Guerendo | SF (at BUF)
70) Will Shipley | PHI (at BAL)
71) Kyle Juszczyk | SF (at BUF)
72) Chris Brooks | GB (vs. MIA)
73) Cordarrelle Patterson | PIT (at CIN)
74) Ty Chandler | MIN (vs. ARI)
75) Trey Sermon | IND (at NE)
76) Emari Demercado | ARI (at MIN)
77) Carson Steele | KC (vs. LV)
78) Dameon Pierce | HOU (at JAX)
79) Hassan Haskins | LAC (at ATL)
80) Tyler Goodson | IND (at NE)
81) Patrick Ricard | BAL (vs. PHI)
82) Hunter Luepke | DAL (vs. NYG)
83) Pierre Strong Jr. | CLE (at DEN)
84) Julius Chestnut | TEN (at WAS)
85) Craig Reynolds | DET (vs. CHI)
86) Dalvin Cook | DAL (vs. NYG)
87) J.J. Taylor | HOU (at JAX)
88) Michael Burton | DEN (vs. CLE)
89) Sione Vaki | DET (vs. CHI)
90) C.J. Ham | MIN (vs. ARI)
91) Ronnie Rivers | LAR (at NO)
92) Travis Homer | CHI (at DET)
93) Kenny McIntosh | SEA (at NYJ)
94) Blake Watson | DEN (vs. CLE)
95) Eric Gray | NYG (at DAL)
96) Tyreik McAllister | LV (at KC)
97) Joshua Kelley | NYG (at DAL)
98) Alec Ingold | MIA (at GB)
99) DeeJay Dallas | ARI (at MIN)
San Francisco 49ers at Buffalo Bills Trends
San Francisco 49ers
Team: The 49ers have lost consecutive games on two separate occasions this season – the last time they did that was in 2020.
QB: Brandon Allen was fine when not pressured (75% complete), but was just two-of-nine when feeling the heat.
Offense: The 49ers averaged 2.31 points per drive in Weeks 1-11, a rate that dropped to 0.83 under Allen in Lambeau on Sunday.
Defense: San Francisco creates pressure on 36.3% of non-blitzed dropbacks, the sixth-highest rate in the league through 12 weeks.
Fantasy: Is there a more difficult player to rank with confidence annually than Deebo Samuel Sr.?
- 2021: 37.6% production over expectation
- 2022: 13.7% production under expectations
- 2023: 35.2% production over expectations
- 2024: 10.2% production under expectations
Betting: Over tickets have come through in each of the 49ers’ past five primetime games.
Buffalo Bills
Team: A seventh straight win would match Buffalo’s longest single-season run of the 2000s (2022).
QB: Why is Josh Allen’s interception rate (1.5%) trending for a career-low? His quick pass rate sits at 67%, easily a career-high (2023: 58.4%).
Offense: The Bills have picked at least 50% of their third downs in four straight games (one such effort in their first seven games).
Defense: Buffalo is allowing opponents to convert 40.8% of third downs, its worst rate since 2012 (44%).
Defense: Patience. The Bills blitz at the third lowest rate, joining the Eagles and Ravens in the bottom-5 of that stat as teams with Super Bowl dreams.
Fantasy: James Cook has six RB1 finishes this season, thanks to having eight more rushing touchdowns on 100 fewer carries than a season ago.
Betting: Overs have cashed in six straight Buffalo home games.