Bo Nix or Kyren Williams: Who Should You Start?

2026 Week 4 · deterministic head-to-head · Verdicts based on PPR scoring.

Start Nix — the projection and snap share edges are too wide to ignore.

Bo Nix projects 15.1 to Williams's 13.1 and plays a 100% snap share to Williams's 63%. Williams's edge is the game script, 24.5 implied points to 22.0. The gap is comfortable.

Bo Nix

Bo Nix

QB13DENvs SF

Projected Points

Toss-Up· low
Kyren Williams

Kyren Williams

RB16LARvs PHI

Projected Points

Start· medium

Bo Nix’s market

PASS YDS
O/U 220.5
-110 / -120
Passing Yards Props →
PASS TD
O/U 1.5
-104 / -122
Passing Touchdowns Props →
INT
O/U 0.5
-127 / +100
Interceptions Thrown Props →
RUSH YDS
O/U 15.5
-119 / -106
Rushing Yards Props →

Kyren Williams’s market

RUSH YDS
O/U 57.5
-109 / -115
Rushing Yards Props →
REC
O/U 2.5
+122 / -155
Receptions Props →
REC YDS
O/U 13.5
-106 / -118
Receiving Yards Props →
ATD
Anytime TD
-110
Anytime Touchdown Props →
DEN@
SFSun, Oct 4, 4:25 PM ETView the game →
LAR@
PHISun, Oct 4, 1:00 PM ETView the game →

Why Bo Nix

Toss-Up· low

Starting QB and offensive centerpiece. Mobile RPO/play-action operator with rushing production and full-season durability.

QB13 at 15.1 projected with a neutral SF matchup (17 of 32) and a modest 22.0 implied total; he sits right on the 12-team starter line.

  • SF ranks 17 of 32 against QBs (a middle-of-the-road matchup, 3-game sample).
  • Vegas implies 22.0 team points as 2.5-point underdogs.
  • Listed QB on the latest depth chart with a 100% snap share.

The call

  • Consensus QB13 means Nix is the first quarterback just outside a 12-team starting tier, so he only beats a typical replacement in deeper or injury-hit situations.
  • The SF matchup grades 17 of 32, squarely neutral, and it rests on a 3-game sample with 0.25 confidence, so it offers no real edge either way.
  • A 22.0 implied team total and a 2.5 spread point to a competitive, middling game script with no shootout ceiling built in.
  • The ESPN headline about first-down struggles is unverified and does not move the needle. Start him over a QB at or below his rank. Prefer a top-12 option with a softer matchup or a higher team total.

Latest on Nix

Bo Nix points to first-down struggles

Jeff Legwold reports Bo Nix believes the Broncos' struggles on first down are fueling their slow starts.

VideoESPN · Sep 30, 2026

Reported by the sources listed — not independently verified.

Why Kyren Williams

Start· medium

RB1 and feature back. High-volume workhorse with vision, contact balance, and consistent goal-line and passing-game usage.

RB16 consensus with a 63% snap share on a favored offense implying 24.5 points; the matchup is only mildly tough and that read rests on a thin sample.

  • PHI ranks 12 of 32 against RBs (a middle-of-the-road matchup, 3-game sample).
  • Vegas implies 24.5 team points as 1.5-point favorites.
  • Listed RB on the latest depth chart with a 63% snap share.

The call

  • Role is the anchor. Williams has a 63% snap share and an 11% target share across 3 games, and he carries no injury designation. A therams.com report (2026-10-01) says he was used as a receiver from the slot against Denver, which adds PPR upside beyond his rushing work.
  • Consensus has him at RB16 with a 13.0-point projection, inside the RB2 tier of a 12-team league. That clears a typical replacement-level option, so I'm overriding the model's toss-up lean.
  • Game script is favorable. The Rams are 1.5-point favorites with a 24.5 implied total, which points to scoring chances and a neutral-to-positive rushing script.
  • The main risk is PHI's DvP composite of 12 of 32, which is tougher than average. It comes from a 3-game sample at 0.25 confidence, so it shouldn't outweigh his workload.

Latest on Williams

Role

Against the Eagles, Kyren Williams had 16 carries and 10 receptions, producing 80 rushing yards, 67 receiving yards and two rushing touchdowns.

Kyren Williams' 2 rushing touchdowns for Rams just the exclamation point on an all-around performance against Eaglestherams.com · Oct 4, 2026
Kyren Williams and Blake Corum's relationship off the field building fuel on the field

With Rams running backs Kyren Williams and Blake Corum splitting carries through two games, their off-field bond growing this offseason is showing up in how they motivate each other on the field during the 2026 season.

therams.com · Sep 25, 2026
The Rams are better when both RBs get the ball

Through two weeks, Williams and Corum have nearly split the carries exactly.

ESPN · Sep 25, 2026

Reported by the sources listed — not independently verified.

Head-to-head stats

MetricBo NixKyren Williams
Projected points
Consensus rankQB13RB16
Opponent vs positionSF · 17 of 323-game samplePHI · 12 of 323-game sample
Passing Yards10 of 32—
Passing TDs4 of 32—
Passing Completions25 of 32—
Passing Attempts23 of 32—
Interceptions21 of 32—
Rushing Yards—26 of 32
Rushing TDs—8 of 32
Rushing Attempts—30 of 32
Receptions—2 of 32
Receiving Yards—1 of 32
Anytime TD—6 of 32
Target share—11%
Reception share—16%
Implied total · spread22.0+2.524.5-1.5
Depth chartQB1RB1
Snap share100%63%
Start/Sit record0–1+3 toss-ups2–0+1 toss-up

Recent form

Bo Nix — last 3 weeks

Week 3vs LAR
Week 2vs JAX
Week 1vs KC

Kyren Williams — last 3 weeks

Week 3vs DEN
Week 2vs NYG
Week 1vs SF

Signal breakdown

  • 15.1 vs 13.1 projected PPR pointsBo Nix +
  • Rank 13 vs 16Bo Nix +
  • Opponent DvP rank 17 vs 12 (32 = softest)Bo Nix +
  • Implied 22.0 vs 24.5 team pointsKyren Williams +
  • No injury designationseven
  • 100% vs 63% snap shareBo Nix +

Compare different players

Week 4209 players
Player A
vs
Player B

Every fantasy-relevant player this week — search or filter by position.

More Nix comparisons

More Williams comparisons

This week’s toughest calls

Start/Sit Board•Weekly Rankings•Streamers•Sleepers & Busts•Waiver Wire•My Team•MLB NRFI Board•Free Tools•NFL Props•NFL Games

Get a Start/Sit call on your whole roster →

Save your team once and see a Start, Sit, or Toss-Up verdict on every player, every week — with the matchup, usage and game-script evidence behind each call.

Add to My Team — free

Or browse this week’s NFL games or NFL player props.