Brock Purdy Completions - Player Prop Bet Week 17

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Brock Purdy

NFL · Player Props

Brock Purdy

QB · San Francisco 49ers

Completions

San Francisco 49ers vs Chicago Bears · Week 17, 2025

Updated Dec 29, 2025 3:57 AM EST

Analysis

Brock Purdy Completions Prop is currently Over/Under 22.5 (-105/-125).

The money has been on the Under as it opened 22.5 @ +100 before it was bet down to 22.5 @ -125.

Key Factors

Favors Over

The weather forecast calls for 4-mph wind in this game. Low wind usually means increased pass volume, and lower run volume, increased touchdown potential, and better passing efficiency.
Our trusted projections expect Brock Purdy to attempt 36.0 passes in this week's contest, on balance: the 9th-most out of all quarterbacks.
Brock Purdy's 69.8% Adjusted Completion% this season indicates a meaningful progression in his passing precision over last season's 66.2% rate.
This year, the weak Chicago Bears defense has conceded a colossal 74.3% Adjusted Completion Rate to opposing quarterbacks: the 2nd-largest rate in the league.
The Chicago Bears linebackers grade out as the worst unit in the NFL this year with their pass rush.

Favors Under

The 49ers are a 3.5-point favorite in this game, which points towards a rushing game script.
Right now, the 8th-slowest paced offense in football (in a neutral context) according to the projections is the 49ers.
Opposing quarterbacks have averaged 31.8 pass attempts per game against the Bears defense this year: 10th-fewest in the league.

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