Matchup Analysis Automated Analysis
San Francisco 49ers face Arizona Cardinals in Week 18 at State Farm Stadium. This early analysis uses the available pregame data; injury reports and market prices can still change before kickoff.
San Francisco 49ers enter with a 6-0 record across 6 completed games in this competition phase. They average 29.5 points scored and 18.3 allowed. Their current streak is 6 wins.
Arizona Cardinals enter with a 2-4 record across 6 completed games in this competition phase. They average 21.0 points scored and 29.7 allowed.
The scoring matchup puts San Francisco 49ers’s 29.5 points per game against a Arizona Cardinals defense allowing 29.7. In the other direction, Arizona Cardinals average 21.0 against San Francisco 49ers’s 18.3 allowed. These season averages provide a broad view of offensive production and defensive results; they do not adjust for opponent strength or establish a specific passing or rushing advantage.
San Francisco 49ers have injury designations to monitor: Nick Bosa (DE) — Questionable; Mike Evans (WR) — Questionable; Marques Sigle (S) — Questionable. These designations do not confirm who will start.
Arizona Cardinals have injury designations to monitor: Andrew Wingard (S) — Questionable; Wydett Williams Jr. (S) — Questionable. These designations do not confirm who will start.
The strongest model adjustments toward Arizona Cardinals are Home field / environment; Key injury availability.
The strongest model adjustments toward San Francisco 49ers are Starting QB efficiency; Explosive-play differential.
The current model leans toward SF at 62.0% estimated win probability. This is a provisional model estimate, not a calibrated guarantee.
- 🏈 Record: San Francisco 49ers 6-0
- 🏈 Record: Arizona Cardinals 2-4
SportsFBI Model
⚖️ Game Edges
Key factors driving this matchup
SFA Starting QB efficiency +1.7 Strong
Jacoby Brissett (2026) 66.7% CMP / 5.7 Y/A / 3.8% TD / 2.6% INT / 83.4 RATE · Brock Purdy (2026) 69.6% CMP / 8.5 Y/A / 8.2% TD / 1.2% INT / 118.1 RATE
SFA Explosive-play differential +1.1 Very Strong
3% / 6% allowed | 6% / 4% allowed
SFA Record quality +1.0 Very Strong
ARI 2-4 · SF 6-0
ARIH Home field / environment +1.0 Moderate
ARI home field | ARI 83 days / SF 82 days
SFA Recent form +0.75 Strong
ARI W1 · SF W6
SFA Red-zone TD efficiency +0.75 Very Strong
48% / 76% allowed | 90% / 50% allowed
SFA Run-game matchup +0.64 Moderate
ARI 3.7 rush Y/A / 4.4 allowed | SF 4.6 / 3.6 | PBP 77% stuff avoided | 84% stuff avoided
SFA Raw scoring differential +0.59 Strong
ARI 21.0 PPG · SF 29.5 PPG | ARI 29.7 PA/G · SF 18.3 PA/G
SFA Pass defense +0.55 Moderate
ARI 7.4 net Y/A / 65.7% CMP / 116.5 RATE | SF 5.5 / 65.9% / 88.4
ARIH Key injury availability +0.50 Weak
ARI 0 unavailable starters · SF 1
SFA Early-down efficiency +0.48 Moderate
47% / 45% allowed | 52% / 41% allowed
ARIH Game-script tendencies +0.48 Moderate
56% neutral pass / 66 plays | 56% / 57
ARIH Schedule strength +0.31 Strong
ARI 50% opp wins · SF 35%
SFA Third-down efficiency +0.20 Weak
ARI OFF 39.3% / DEF 41.8% | SF 51.5% / 38.6% | PBP 69%/42%/23% | 64%/45%/40%
ARIH Special teams efficiency +0.05 Weak
ARI FG 87.5% / NET PUNT 40.5 | SF 66.7% / 45.5
ARIH Turnover differential +0.03 Weak
ARI 1.0 GIVE / 1.3 TAKE | SF 1.0 / 1.2
ARIH OL vs DL matchup +0.02 Weak
ARI OL sack 4.9% / DEF sack 7.5% | SF 2.8% / 6.6%
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