Prop LabPlayer traits and matchup myths
Does 40-Yard Dash Speed Predict Receiving Yards Props?
Speed sells. We wrote down the most popular combine-based prop ideas before looking at the results, then tested them on a season they had never seen. None of them held.
By Edgehalla ResearchPublished 7 min read
The idea: speed kills, so bet the over
It is one of the most common prop pitches. A receiver who ran a 4.3 at the combine draws a corner who has been getting torched by fast receivers. The weather is calm. Hammer the receiving-yards over.
It makes intuitive sense. Speed creates separation, and separation creates yards. So we turned the idea into exact rules and tested it against real Vegas prop lines.
Crucially, we wrote the rules down and committed them before computing any result. Thresholds, markets and pass/fail rules were all fixed in advance. That keeps us honest. It is easy to “find” a speed edge if you can keep moving the cutoff until something works.
How we tested speed against prop lines
- Lines: consensus player props from the major U.S. books, snapshotted 60 minutes before kickoff.
- Discovery seasons: 2023 and 2024. Holdout: 2025, touched once after every rule was frozen.
- Fast: a 40-yard dash of 4.43 or better, the fastest quarter of combine receivers since 2008. Blazing: under 4.30.
- Agile: a 3-cone of 6.82 or better, or a short shuttle of 4.15 or better.
- Benchmarks: the 52.4% break-even at −110, and the blind rate of the same side (an over angle must beat betting every over).
To earn “promising,” an angle needed a 2025 win rate above 52.4% on at least 60 bets, and a discovery result pointing the same way.
What the combine data can and cannot tell us
Combine times exist for most receivers with prop lines, but agility drills and true in-game speed are much thinner.
One honest limit: in-game top speed is not available for free under a license that allows commercial use. We used legal proxies instead, mainly a receiver’s rate of 20+ yard catches over his previous 16 games.
The results: every speed angle failed
Speed and agility overs: discovery vs holdout
Win rate of the over, with the blind over rate for 2025
Every pre-registered speed or agility over fell below both the break-even line and the blind over rate in the 2025 holdout.
- Discovery 2023–24
- Holdout 2025
- Blind over 2025
H1: the fast receiver vs the “burnable” corner
This was the headline idea: a fast receiver under 30, wind under 10 mph, and at least one likely corner flagged as “beaten by fast receivers.” In discovery it went 51.5%, barely above the blind over rate. In 2025 it went 45.6% on 114 receiving-yard bets and 46.4% on 112 longest-reception bets. ROI: −14.7%.
A stricter cut, a 40 under 4.30, was even thinner. It produced 8 bets in two discovery seasons and 6 in the holdout, where it went 2–4. You cannot learn anything from 6 bets, except that the idea almost never fires.
H2: agility and route running
Agile receivers against corners who had struggled with agile receivers went 37.5% on receptions (n 128) and 39.6% on yards (n 106) in 2025. ROI was −29.8% and −25.7%. Those were among the worst results in the whole lab.
H3: in-game speed, by proxy
Receivers in the top quarter for 20+ yard catches went 47.2% on receiving-yard overs (n 335) and 47.5% on longest-reception overs (n 335). That is roughly what betting every over would have done. Adding a defense that allows lots of big plays (H3b) changed nothing: 47.0%.
Across the whole family of hand-picked hypotheses, the best discovery score was z 0.96. Shuffled data set a bar of 1.88. None came close.
Why combine speed does not beat prop lines
The market already knows. A receiver’s 40 time is public years before his first prop line. His yards per game, target share and deep usage all reflect his speed already. The line is built on those.
The corner half is noise. We cannot see who covers whom. Our guess at a receiver’s likely corner was his defense’s most-targeted corner only 27.7% of the time, against 23.2% for a random corner. A “beaten by speed” label built on those guesses rests on a handful of mostly misassigned plays. See WR vs CB matchups for the full story.
Speed is static; games are not. A combine time is one number from one day, often years ago. Targets, game script and injuries swing from week to week far more than speed does.
One twist from the wider search: “fastest-third receivers against short corners at home” looked like a great under in discovery, at 63.3%. In 2025 it went 45.1%. Speed angles failed in both directions.
Speed myths, tested
Each card shows the 2025 holdout result for a pre-registered hypothesis. Verdicts: myth, real but priced, small but real or unproven.
- Myth
“A fast, young receiver will torch a corner who keeps getting beaten by speed.”
Pre-registered and tested on 2025: 45.6% on receiving-yard overs (n 114) and 46.4% on longest reception (n 112).
- Unproven
“Sub-4.30 burners are automatic over plays.”
Only 13 receivers since 2008 ran under 4.30. The angle fired 8 times in two seasons and went 2–4 in 2025: too rare to judge.
- Myth
“Shifty route runners win against corners who struggle with agility.”
Agile receivers in that spot went 37.5% on receptions overs (n 128) and 39.6% on yards (n 106) in 2025.
- Myth
“If the receiver is faster than his corners, bet the over.”
Receivers at least 0.08 s faster than their likely corners went 41.3% on receiving-yard overs in 2025 (n 235), ROI −22.7%.
- Myth
“Big, fast running backs feast against light boxes.”
Top-quarter speed-score backs against light-box defenses went 46.2% on rushing-yard overs in 2025 (n 169).
How to use speed instead
- Use speed to understand a role, not a single game. Fast receivers earn deep targets, and that shows up in their lines already.
- Chase opportunity. Targets and routes drive receiving yards far more than 40 times do.
- Ignore “he’ll torch that corner” takes unless someone can show who actually covers whom.
You can still see each receiver’s combine numbers on his player page. They are useful context for who a player is. They are just not a betting edge.
Frequently asked questions
Does a fast 40-yard dash mean more receiving yards?
Speed helps a receiver earn a role, but it does not beat prop lines. Receivers with a 40 of 4.43 or better, facing corners flagged as beaten by speed, went 45.6% on receiving-yard overs in our 2025 holdout test.
Should I bet the over on fast wide receivers?
Not because of speed alone. Every speed or agility over we pre-registered lost money in the 2025 holdout; the main ones returned between −11.8% and −29.8%. The line already reflects how a fast receiver is used.
Do 3-cone and shuttle times predict receptions props?
Not in our tests. Agile receivers (3-cone 6.82 or better, or shuttle 4.15 or better) against corners who had struggled with agile receivers went 37.5% on receptions overs in 2025, on 128 bets.
Where can I get NFL in-game top speed data?
There is no free source licensed for commercial use. Official tracking data runs through enterprise data deals, and the free Big Data Bowl samples are non-commercial. We used legal proxies such as a receiver’s rate of 20+ yard catches.
Do breakaway receivers hit longest reception overs?
No more than anyone else. Receivers in the top quarter for 20+ yard catches went 47.5% on longest-reception overs in 2025 (n 335), almost exactly the 47.6% rate of every longest-reception over.
More in Player traits and matchup myths
Sources and method
- The Odds API (historical and live player prop lines)
- nflverse data (play-by-play, schedules, weather, injuries, combine)
- Wilson score interval
- Permutation tests
- National Council on Problem Gambling (1-800-GAMBLER)
- Responsible Gambling Council (Canada)
Research and analysis, not betting advice. Past results do not guarantee future returns; bet only what you can afford to lose.