Learn how to use the research.
Short guides to the product, one page per pick app, the methodology behind each engine, and the tools that do the arithmetic. Research and analysis only.
Getting started
Getting started with Slateline
What the Signal Board shows, how the sport selector works, and what a signal is before you read a single number.
How to read a projection
The median, the distribution, the 80% range, volatility, and what the Model % line is actually claiming.
Replay the product tour
Six short steps on the Signal Board: the projection, price versus line, the market panel, filters, a withheld offer and where to learn more. Optional, and replayable any time.
Product guides
Comparing offers across apps
Platform chips, the other books popover, exact lines versus alternate lines, over-only products, and when a price counts as published.
Why a signal is withheld
What no play means, the real block and caution labels the product prints, and why withheld rows stay on the page.
Freshness and coverage
The two clocks on every board, what the delayed banner means, how often each sport rebuilds, and what unavailable means when a number is missing.
Researching one player
The offers workspace, the research trace, head to head history and its scope, and what game history exists per sport.
Platform workflows
One page per app: what the product is, what Slateline can and cannot do for it today, and the settlement terms that change how a prop reads. Platform rules change. Check the app's own rules page before relying on anything here.
PrizePicks
Covered todayPrizePicks is a daily fantasy pick'em product where entries are built from player projections rather than from sportsbook odds, and it is not a sportsbook.
Underdog
Covered todayUnderdog Fantasy is a fantasy product whose higher and lower pick'em entries are the part Slateline reads, separate from its best ball drafts.
Sleeper
Covered todaySleeper Picks is the pick'em product inside the Sleeper fantasy app, and it is not a sportsbook.
Boom Fantasy
Not coveredBoom Fantasy is a daily fantasy pick'em app in which entries are built from player projections, and it is not a sportsbook.
Betr
Switched offBetr Picks is the pick'em product, which is a different product from the Betr sportsbook, and it is the pick'em side that once reached Slateline.
Dabble
Not coveredDabble in the United States is a pick'em product, which is a different offering from the Dabble wagering app available in Australia, and neither reaches Slateline today.
DraftKings Pick6
Switched offDraftKings Pick6 is a daily fantasy pick'em product, and it is not the DraftKings sportsbook: a Pick6 selection and a sportsbook player prop are different offers with different rules even when the player and the stat match.
ParlayPlay
Not coveredParlayPlay is a daily fantasy pick'em app whose entries combine player projections, and it is not a sportsbook.
Methodology
How the projections are produced and how they are judged. The graded record for every sport lives in the Model Room.
Model versus market, and model versus line
Three different quantities: what the market thinks is fair, what a price needs to break even, and what a bet returns on average. Plus what the product shows when no reference exists.
How the record is measured
The Model Room: the standard record, the recommended standard record, the goblin record, the payout ledger, confidence intervals, calibration, and what none of it proves.
MLB
LiveProjects hitter and pitcher props from thousands of full game simulations of every game on the slate, priced against live DFS lines and a sportsbook consensus. Live and graded nightly.
WNBA
LiveProjects points, rebounds, assists, and combo props from possession level simulations built on minutes and availability. Live on real lines and graded nightly.
NBA
Opens late OctoberProjects scoring, rebounding, and playmaking props with rest days, load management, and blowout minutes built into every simulation. Ready for opening night in late October.
NFL
LiveProjects passing, rushing, and receiving props from drive by drive simulations that follow the flow of the game. Live on real lines for the season.
College Football
LiveProjects college football props with the sport's own realities simulated: early starter pulls, backup snaps, and wide differences in team tempo. Live on real lines for the season.
College Basketball
Opens early NovemberProjects college basketball props around the college game's own rules: five fouls, bonus free throws, and deliberate late game fouling. Ready for the November season.
Tennis
LivePlays out every service game, tiebreak, and set to project aces, games won, and match length for ATP and WTA players. Live on real lines all year.
Golf
Waiting on dataProjects birdies, strokes, and cut chances hole by hole, with PGA cut weeks and LIV's 54 hole events treated as genuinely different formats. Built and audited, waiting on a strokes gained data feed.
UFC / MMA
LiveProjects significant strikes, takedowns, and fight time from moment by moment fight simulations where an early finish settles the number instead of voiding it. Live on real lines for UFC cards.
Soccer
LiveProjects shots, passes, tackles, and saves with lineups and substitution timing simulated first, because minutes decide everything. Live on real lines for World Cup and club matches.
League of Legends
LiveProjects kills, assists, and creep score map by map, with game length driving every number and series sweeps priced in. Live on real lines for pro league matches.
Counter-Strike 2
LiveProjects kills and headshots round by round, where close maps run long and lift both teams' totals. Live on real lines for pro matches.
Research
The editorial library: longer pieces on projections, market structure and honest evaluation. The guides above explain this product, the library explains the subject.
Player Prop Research Library
A library for people who want to understand player props properly: how projections are built, what a posted line actually says, how probability and hit rates differ, and how to judge a model honestly. Educational research and analysis only.
Editorial policy
How this work is researched, sourced, reviewed and corrected.
Calculators
The arithmetic behind the comparisons, with the inputs visible. Open the calculator hub or go straight to one.
- Odds converter
- No vig fair odds
- Expected value
- Parlay return
- Fractional Kelly
- Hedge
- Two way arbitrage
- Bonus conversion
Slateline is an educational research and analysis product. It does not place bets or accept wagers. Projections are estimates, not guarantees. If gambling stops being fun, call 1 800 GAMBLER.