
Stats updated: Sep 20, 2026 — nightly box scores, not live.
Brock Purdy has gone over 3.5 PASS TD in 1 of his last 10 decided games (10%), measured against our typical-game line.
Pick any line — standard, demon (harder, pays more), goblin (easier, pays less), or an alternate with its payout multiplier — and the whole read updates to it. Only the standard line takes an under; every other variant pays the over only. Each rung’s FireFactor is scored against its OWN payout breakeven — 0 means fairly priced for that payout, not a coin flip — so rungs compare directly. The bar uses the best information available: an exact posted multiplier, else the market’s de-vigged sportsbook odds at that exact line, else a published-payout approximation.
Typical entry payouts (verify in the app — they change and can vary by state): Power Play 2-pick 3×, 3-pick 5×, 4-pick 10×. Flex Play 3-pick 2.25× (1.25× one miss), 4-pick 5× (1.5× one miss), 5-pick 10× (2× / 0.4× on misses), 6-pick 25× (2× / 0.4× on misses).
Demons: Adding a demon raises the whole entry’s payout multiple (a harder line buys a bigger multiplier). Demons can only be taken as More.
Goblins: Adding a goblin lowers the whole entry’s payout multiple (an easier line costs payout). Goblins can only be taken as More and aren’t combinable with everything — the app shows the exact adjusted payout.
Purdy was in complete command of the offense throughout Sunday's lopsided win, throwing only two incompletions while finishing as the team's leading rusher for the cherry on top. The 49ers have been one of the league's best teams in the early going, outscoring the Rams and Dolphins by a combined margin of 62-20 heading into a Week 3 home game against the Cardinals. Purdy has contributed six total touchdowns during this hot start, including third-quarter touchdown passes of 12 yards to George Kittle and six yards to Kyle Juszczyk against the Dolphins following Purdy's two-yard touchdown run in the second quarter.
Player is Out — no read on this line.Small samples and hot streaks are discounted by a 95% Wilson lower bound (the trust factor), so a thin streak can’t masquerade as an edge.
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Over 3.5 PASS TD by situation, each with its own confidence — thin splits read Low, so a small-sample “crushes at home” doesn’t masquerade as an edge.
ARI allows 2.0 PASS TD per game to quarterbacks (rank 1 = allows the most).
Sample: 2 player-gameslow sample — interpret with caution
FavorableOver his last 10 games, Brock Purdy has gone over 3.5 PASS TD 1 of 10 decided times (10%) — versus 8% across the full season. ARI has been a favorable matchup for quarterbacks this season, allowing the 7th-most PASS TD of 32 teams (2.0 per game) (small sample — read with caution). His game-to-game PASS TD have been highly variable (σ ≈ 1.3), so short streaks can mislead. These are descriptive stats about past games, not predictions or betting advice.
Our model puts the over at 10.9% vs the market's no-vig 59.6%. A comparison of two numbers — not a guarantee.
Each book’s line and your season over rate at that number, vs the market consensus (1.5 PASS TD). A softer number you’d clear more often is a discount — the best one lifts the FireFactor read. Click a book to switch the whole read to it.
over rate = season hit rate at that line. Edge = points of hit rate vs the consensus line. Descriptive research from past games — not betting advice.
Enter the book's American odds to see implied probability, the no-vig fair price, and the edge vs. this player's season hit rate. This demon/goblin/alternate line pays the over only — no under to price.
Hit rate excludes pushes from the denominator. Confidence uses a 95% Wilson interval — a high recent rate on few games still reads as low confidence. Season over rate at this line: 8%.
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Descriptive research from public game logs — hit rates describe past games and are not predictions, picks, or betting advice.