Brock Purdy or Jared Goff: Who Should You Start?

The call

• Consensus has him at QB18 for 15.5 points; in a 12-team single-QB league that's below the replacement line you can stream against.
• A 22.8 implied team total and a 3-point underdog spread cap the ceiling — this projects as a moderate-volume, moderate-scoring game rather than a shootout.
• The Rams' defense-vs-QB composite sits 18 of 32, dead-middle, and it's built on a 0-game sample (confidence 0.00), so there's no matchup edge to bank on.
• He's the locked-in starter with no injury designation, so this is purely a ceiling call — if you're thin at QB he's a fine floor play, but a top-12 streamer beats him this week.

The call

• Detroit's 27.8 implied total is the driving number here — Goff only needs a normal share of that scoring to clear his 15.8 projection.
• The opponent's 9-of-32 DvP composite looks scary but carries a 0-game sample and 0.00 confidence, so it shouldn't override the Vegas number.
• QB16 consensus makes him a back-end QB1 rather than a set-and-forget play; the -7.0 spread is the real risk, since a comfortable lead can shift Detroit toward the run in the second half.
• Full-time starter with no injury designation — role and volume are locked in.