Know why before you pick.
GammaLine is player-prop research, explained. See an estimated chance for every prop, how it compares with the FanDuel price, and the reasoning behind it, all on one screen.
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- Recent form: a hit in 7 of his last 10 games.
- Opportunity: batting second, about 4.4 expected plate appearances.
- Matchup: the opposing starter allows above-average contact.
- Biggest uncertainty: today’s lineup isn’t confirmed yet.
What you get
Everything a prop needs, on one screen.
No more jumping between box scores, injury reports and the sportsbook app. GammaLine puts the number, the price and the reasoning together.
Estimated chance
Every prop gets an estimated chance to hit, built from game logs, expected playing time and the matchup.
Estimate vs price
See the model’s fair odds next to the FanDuel price and its break-even, so a good-looking line is easy to check.
Why this pick?
Recent form, expected opportunity, the matchup and the biggest uncertainty, in plain language.
Do your picks hit?
Saved picks are graded automatically from official box scores, so you can see how your research holds up.
How it works
From question to ticket in three steps.
Pick a game or player
Today shows the slate, lineup and injury news, and the props where the model and FanDuel disagree most.
Research the line
Step the line up or down, compare fair odds with break-even, and read why the estimate lands where it does.
Build your ticket
Add selections, then send the ticket to FanDuel to place it yourself, or save it to track. GammaLine never places bets.
Sports
Built for the props you actually play.
NFL player props
Usage-driven estimates for receiving, rushing and passing props, with line history and price alerts.
MLB player props
Lineup- and matchup-aware estimates for hitters and pitchers, with confirmed-lineup status.
WNBA player props
Minutes-first estimates for points, rebounds, assists, threes and combos.
Honest numbers
Estimates, not guarantees.
Every sport has a model-results page in the app, and the headline checks are published on this site, including where the models fall short. You get the reasoning and the track record, never a promise.
- Probability checks for NFL, MLB and WNBA, published on How it works
- Known weak spots called out, not hidden
- No “locks”, no ROI claims, no sportsbook affiliation
Reading a prop
Over 0.5 hits at −150
- Estimated chance
- 62.0%
- Model fair odds
- −163
- FanDuel price
- −150
- Break-even at −150
- 60.0%
- Estimate vs price
- +2.0 pts
Illustrative example. A positive difference means the estimate is above the price’s break-even. It is not a prediction that the bet will win.
Watchlist
Players you’re tracking, across sports.
Tickets
Up to 12 selections, sent to FanDuel or saved.
Model results
How each sport’s estimates have performed.
Web and iPhone
One account. iPhone app coming soon.
Your workspace
Your research, organized.
Save the players you’re watching, build tickets as you go, and come back to see how they turned out. Everything syncs to your account.
Pricing
One plan. Every sport.
Full access to NFL, MLB and WNBA research.
Renews automatically until canceled. 7-day free trial for new accounts. The final price is shown before you subscribe. 21+.
Questions
Good to know.
Is GammaLine a sportsbook?
No. GammaLine is a research tool. It never accepts or places bets. When you build a ticket, you can send it to FanDuel and place it there yourself, or just save it to track.
Will GammaLine tell me which bets will win?
No one can promise that. GammaLine gives you an estimated chance for each prop and shows how it was reached, including the biggest uncertainty. Estimates can be wrong, and we publish how the models have performed so you can judge them yourself.
Which sports and props are covered?
NFL (receptions, receiving, rushing and passing yards, touchdowns and attempts), MLB (hits, total bases, home runs, runs, RBIs, H+R+RBI and pitcher strikeouts) and WNBA (points, rebounds, assists, made threes and combos).
Where do the numbers come from?
Stats come from the MLB Stats API, ESPN and nflverse. Prices come from FanDuel’s public feed. The estimates are GammaLine’s own models, explained on the How it works page.
How much does it cost?
$9.99 a month or $99.99 a year for everything, across all three sports. New web accounts start with a 7-day free trial. It renews automatically and you can cancel anytime. See pricing.
Is there an iPhone app?
Yes, it’s on the way to the App Store. Your GammaLine account will work on both the web and iPhone.
Who can use GammaLine?
Adults 21 and over. Please only bet where it’s legal for you, and never more than you can afford to lose.
Research your next prop with GammaLine.
$9.99 a month or $99.99 a year. Cancel anytime. 7-day free trial.