Start Brock Purdy or Kirk Cousins? Week 9

Our Week 9 call

Start Brock Purdy over Kirk Cousins in Week 9.

Market-based projections have Brock Purdy at 22.1 points and Kirk Cousins at 17.5, a gap of 4.5. Both numbers are scaled up from a partial market: not every stat the position needs is posted yet, so the rest is estimated from what is.

What the market projects

Player markets imply 22.1 fantasy points for Brock Purdy, with 80 percent of the markets a QB needs posted.

Player markets imply 17.5 fantasy points for Kirk Cousins, with 80 percent of the markets a QB needs posted.

The market-based projection for Kirk Cousins is 1-2 passing touchdowns (3 market sources).

That puts Brock Purdy 4.5 points ahead of Kirk Cousins on the market projections.

Week 9 matchups

Brock Purdy and SF host LV on Sunday at 4:25 PM ET.

LV allowed 20.6 fantasy points a game to QBs this season over 8 games, the 5th most in the league.

Quarterbacks threw for 251 yards and 2.3 touchdowns a game against LV, with 0.8 interceptions a game.

Kirk Cousins and LV visit SF on Sunday at 4:25 PM ET.

SF allowed 15.7 fantasy points a game to QBs this season over 7 games, the 11th fewest in the league.

Quarterbacks threw for 224 yards and 1.4 touchdowns a game against SF, with 0.4 interceptions a game.

By points allowed to the position, Brock Purdy has the softer matchup.

Injury status

Brock Purdy is not on the injury report.

Kirk Cousins is not on the injury report.

Usage before Week 9

Through Week 7, Brock Purdy played 98 percent of SF snaps, dropped back 231 times and threw an average of 7.9 air yards per attempt.

Brock Purdy, Week 4 against DEN: 66 of 66 snaps, 19 of 29 passes for 218 yards, 2 touchdowns and 0 interceptions, 8 carries for 31 yards.

Brock Purdy, Week 5 against SEA: 60 of 60 snaps, 19 of 29 passes for 189 yards, 2 touchdowns and 1 interception, 3 carries for 8 yards.

Brock Purdy, Week 6 against WAS: 62 of 62 snaps, 21 of 29 passes for 264 yards, 1 touchdown and 0 interceptions, 5 carries for 28 yards.

Brock Purdy, Week 7 against ATL: 66 of 66 snaps, 27 of 39 passes for 288 yards, 1 touchdown and 2 interceptions, 2 carries for 5 yards.

Through Week 8, Kirk Cousins played 98 percent of LV snaps, dropped back 296 times and threw an average of 8.1 air yards per attempt.

Kirk Cousins, Week 5 against NE: 50 of 60 snaps, 19 of 28 passes for 243 yards, 1 touchdown and 0 interceptions.

Kirk Cousins, Week 6 against BUF: 66 of 66 snaps, 23 of 41 passes for 313 yards, 2 touchdowns and 1 interception.

Kirk Cousins, Week 7 against LAR: 68 of 68 snaps, 26 of 44 passes for 295 yards, 2 touchdowns and 0 interceptions, 3 carries for 6 yards.

Kirk Cousins, Week 8 against NYJ: 63 of 63 snaps, 19 of 26 passes for 247 yards, 3 touchdowns and 0 interceptions, 3 carries for 5 yards.

Their 2025 seasons

In 2025, Brock Purdy played 9 games for SF and scored 187.4 PPR points, 20.8 a game, finishing QB24.

He completed 197 of 284 passes for 2167 yards, 20 touchdowns and 10 interceptions, and ran 33 times for 147 yards and 3 touchdowns.

He was on the field for 98 percent of the offense's snaps in the games he played.

In 2025, Kirk Cousins played 10 games for ATL and scored 108.5 PPR points, 10.9 a game, finishing QB35.

He completed 166 of 269 passes for 1721 yards, 10 touchdowns and 5 interceptions, and ran 14 times for 7 yards and 1 touchdown.

He was on the field for 46 percent of the offense's snaps in the games he played.

Their other Week 9 calls

• Start Brock Purdy over Caleb Williams.
• Start Brock Purdy over C.J. Stroud.
• Start Dak Prescott over Brock Purdy.
• Start Kirk Cousins over Baker Mayfield.
• Start Kirk Cousins over Bo Nix.
• Start Kirk Cousins over Bryce Young.