∅ Empty Set Football
Week 3 · 2026 regular season

Arizona Cardinals at San Francisco 49ers

Sun, Sep 27, 1:05 PM PT

Final San Francisco 49ers won
How the forecasts did
ESF
(pre-game win probability)
ARI 14%
86% SF

Right: SF won

Market
(implied probability, spread, moneyline at close)
ARI (24%, +7.5, +303)
(76%, −7.5, −380) SF

Right: SF won

Market probability: moneylines with the bookmaker's margin (vig) removed, the median of 9 US books; spread: the most common line. Lines as of Sep 27, 12:48 PM PT (last pull before kickoff). Betting lines

After the game

CAP win pct, before and after

Each team's CAP win pct before this game and after it. League average is 0.50; higher is better.

ARI · lost
−0.01
0.01 before → −0.01 after (−0.02).
SF · won
1.02
1.00 before → 1.02 after (+0.02).
This game

How each offense played

Box score and CAP yards per attempt for each offense. Higher is better for an offense; a CAP value above zero means the offense beat what the situation and this defense would predict.

OffensePlaysBox score
yds/att
CAP
yds/att
CAP
−2 to +2
ARIPass525.4−1.29
ARIRush273.4−0.23
SFPass2711.0+2.78
SFRush236.1+0.30

Sacks (raw counts):ARI sacked 2 times · SF sacked 0 times. Sacks are counted, not CAP-modeled.

Box score yards per attempt count yards as an official box score does: rushing includes scrambles and kneel-downs; passing is gross yards per pass attempt, sacks excluded. CAP yards per attempt measure each play against what the down, distance, field position and this specific defense would predict; above zero means the offense beat that expectation.

Before the game

Unit matchups · entering week 3

Where each side has the edge

Each offense against the defense it faces, in CAP yards per attempt. Offense: higher is better. Defense (yards allowed): lower is better.

Pass: ARI offense vs SF defense
−0.4122nd
box score 5.7 · 29th
Edge
SF
−0.0415th
box score 7.2 allowed · 15th
Rush: ARI offense vs SF defense
−0.0519th
box score 3.6 · 24th
Edge
SF
−0.2010th
box score 3.9 allowed · 13th
Pass: SF offense vs ARI defense
+1.302nd
box score 8.8 · 3rd
Edge
SF
+0.6926th
box score 8.4 allowed · 26th
Rush: SF offense vs ARI defense
+0.0715th
box score 4.7 · 8th
Edge
SF
+0.5930th
box score 4.0 allowed · 16th

CAP yards per attempt: yards per play relative to what the down, distance, field position and the specific opponent would predict; offense positive is good, defense (allowed) negative is good. Box score: yards per attempt as an official box score counts them, entering week 3.

Week 3

Other games this week

Home team's chance to win before kickoff. Higher means the home team is more likely to win.

Dots: ESF model and market (median of US books, vig removed) home win probability.

Betting lines

How to read this page

CAP win pct. A fading average of game scores with a half-life of 7 of the team's own games. A win scores 1 plus the opponent's win pct; a loss scores the opponent's win pct minus 1. Last season carries in. League average is 0.50; higher is better.

CAP yards per attempt. Yards per play relative to what the down, distance, field position and the specific opponent would predict. Offense: higher is better. Defense (yards allowed): lower is better.

Box score yards per attempt. Yards divided by attempts, counted the way an official box score counts them: rushing includes scrambles and kneel-downs; passing is gross yards per pass attempt, sacks excluded.

ESF win probability. A logistic regression on both teams' pre-game CAP win pct, with an intercept for home field.

Market. The median of the US books' win probabilities after removing the bookmaker's margin (the vig), from The Odds API. The spread is the most common line across books.