Should I start Brock Purdy or Carson Beck? (Half-PPR Week 18 2026)

THE FF CALL

Start Brock Purdy

+14.5 projected edge · Half-PPR

Start Brock Purdy over Carson Beck for Week 18 Half-PPR: 24.5 projected points versus 10.0.

Brock Purdy · Starter role checked Nov 13, 2026, 3:18 PM ET

Carson Beck · Injury report dated Nov 11, 2026, 3:35 PM ET · Starter role checked Nov 13, 2026, 3:18 PM ET

Brock Purdy: 18.6 FP recent scoring average.
Brock Purdy: 6.25% matchup lift against ARI.

Forecast updated Nov 13, 2026, 3:20 PM ET · Half-PPR

FF PICK

Brock Purdy

QB · SFStats & schedule

24.5FF projected

↑ +3.9 vs ESPN

at ARI

Sun 12:00 AM ET

THE ALTERNATIVE

Carson Beck

QB · ARIStats & schedule

10.0FF projected

↓ -0.8 vs ESPN

vs SF

Sun 12:00 AM ET

Why this pick?

Brock Purdy

FF projection: 24.5 FP +3.9vs ESPN
ESPN: 20.6 FP
Sleeper: 24.8 FP
FantasyPros: 22.6 FP

Brock Purdy faces ARI in Week 18. Recent scoring average: 18.6 fantasy points. The position-specific defensive matchup adjusts the forecast up 6.25%.

Carson Beck

FF projection: 10.0 FP -0.8vs ESPN
ESPN: 10.8 FP
Sleeper: 12.3 FP
FantasyPros: 8.7 FP

Carson Beck faces SF in Week 18. The position-specific defensive matchup adjusts the forecast down 2.5%.

Brock Purdy projects for 24.5 points in half-PPR scoring, 14.5 more than Carson Beck. This is a projection-based recommendation, not a guarantee. Verify the latest injury report and active status before kickoff.

Updated Nov 13, 2026, 3:20 PM ET. Projections can change before kickoff.

Your next decision

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Scoring & lineup notes

PPR awards one point per reception; half-PPR awards 0.5; standard awards none. Custom league rules can change the result. Confirm active status, kickoff and lineup locks. Projections are estimates; completed-week scores are actuals.

FORTIFIED RANKINGS · Rankings position

QB. The bigger picture.

Ranked by FF expected points. Displayed ties favor the higher FF-minus-ESPN margin. Medians and ranges add context.

FF expected pointsMedian · when availableWindow: experimental middle 80%● ESPN● Sleeper● FantasyPros

3 shown · common FP scale

20.625.2

FF MEAN

1
Josh AllenQB · BUF vs NYJSun 12:00 AM ETRange unavailable
Mean 24.9Range unavailable
Median unavailable
ESPN 25.2Sleeper 24.6FantasyPros 23.6
24.9Expected FP
2
Brock PurdyQB · SF vs ARISun 12:00 AM ETRange unavailable
Mean 24.5Range unavailable
Median unavailable
ESPN 20.6Sleeper 24.8FantasyPros 22.6
24.5Expected FP
3
Jayden DanielsQB · WAS vs DALSun 12:00 AM ETRange unavailable
Mean 23.7Range unavailable
Median unavailable
ESPN 21.9Sleeper 21.3FantasyPros 22.3
23.7Expected FP

How the forecast and ranges work

FF uses position-specific provider weights, rescored CBS and FFToday stats, and the existing bounded form, defense and metric adjustments. Saved Boosted Trees and Workload have bounded model influence when available. Monte Carlo supplies the distribution; it does not get a duplicate mean vote.

Every player is ranked by the FF expected score (mean), whether or not a simulation distribution is available. Equal displayed scores use the higher FF-minus-ESPN margin when both ESPN forecasts are known, then unrounded FF, a comparable FantasyPros/Sleeper estimate, and stable identity order if still level. This tiebreaker is not a measured probability of beating ESPN. The median marker is additional information and never changes the order. Missing or availability-conditional ranges do not switch the ranking statistic. The window shows the experimental middle 80% (P10–P90), rather than the difference between two model means. Its observed coverage under this new version is still collecting. Availability-conditional distributions are labeled and are not shifted to a different center.

Missing sources and incompatible scoring are excluded. Bye and confirmed unavailable players remain excluded. ESPN, Sleeper and FantasyPros are the benchmark markers. The common scale covers the displayed outcome windows and available benchmarks.