Colts vs Chiefs player props, and the case against each one.

Indianapolis Colts at Kansas City Chiefs, kickoff 8:20 PM ET. Below are our 2 best props in this game, chosen on recent form, season baseline, the matchup and the odds actually available, with the exact price, where to get it, and the reason each might be wrong.

Our graded record is 82-61-5 at +37.1% ROI since Sep 25, as of Oct 19. Every public pick since Sep 25, 2026, losers included.

Pick	Price	Book	Why
Patrick Mahomes Over 223.5 Passing Yards	-110	DraftKings	over in 70% of his last ten; Patrick Mahomes averages 35.86 pass attempts a game over 14 games, against 28.28 for QBs (98th percentile)
Alec Pierce Over 22.5 Longest Reception	-106	betPARX	over in 70% of his last ten; Alec Pierce averages 3.13 receptions a game over 15 games, against 2.91 for WRs (61st percentile)

The reads behind them

Form here is 60% of a player's last ten games and 40% of his season rate, last season's until this one has enough games behind it, weighed against what the books are charging once the vig is stripped out, and against what the matchup says. A prop only appears when the matchup backs it as well as the form does.

Angle 1

Patrick Mahomes Over 223.5 Passing Yards

-110at DraftKings

Patrick Mahomes has gone over 223.5 passing yards in 79% of 14 games last season and 70% across the last ten.

Patrick Mahomes averages 35.86 pass attempts a game over 14 games, against 28.28 for QBs (98th percentile).
Patrick Mahomes averages 22.50 completions a game over 14 games, against 18.16 for QBs (88th percentile).
Indianapolis Colts rank 2nd of 32 for passing yards allowed, at 262.5 a game over 17 games.

The case against

The price is the weak part of this one, and the form read has to carry it at -110.

Full game log and every book on Patrick Mahomes

Angle 2

Alec Pierce Over 22.5 Longest Reception

-106at betPARX

Alec Pierce has gone over 22.5 longest reception in 73% of 15 games last season and 70% across the last ten.

Alec Pierce averages 3.13 receptions a game over 15 games, against 2.91 for WRs (61st percentile).
Alec Pierce has 22.86 yards per catch over 14 games, against 12.93 for WRs (97th percentile).
Alec Pierce has 18.77 air yards per target over 15 games, against 11.17 for WRs (98th percentile).

The case against

At -106 the price does this pick no favours, so it stands or falls on the form read.

Kansas City Chiefs rank 22nd of 32 for 20+ yard receptions allowed to WRs, at 1.8 a game over 17 games.

Full game log and every book on Alec Pierce

What this is, and what it is not

These are our strongest props in this matchup, chosen on the best combination of recent form, season baseline, the matchup itself, and the line actually available. The Lab's card is a separate five-pick slate selected across every market, and it is graded on the public record.

Where the record lives: the Lab's public record starts Sep 25, 2026, the card and the boosts together, with every pick and every loss on the results page. Each prop above is frozen with the exact price and book shown from the moment it was published. These angles are not on that graded record; the card and the boosts are.

Same slate: Bengals vs Texans player props.

Open the live board The record

Built from the Lab's board for Sunday, September 20. Prices were read across every book quoting each line at Sep 19, 10:30 AM ET and are frozen at those numbers. Prices move; check before you bet. The sentences above are generated from the same numbers printed beside them. 19+. If betting stops being fun, ConnexOntario, 1-866-531-2600.