Articles
ROI (Return on Investment)
ROI is the percentage return on the money you put into contests: what you won minus what you spent, divided by what you spent.
Leverage
Leverage is how contrarian your lineup is versus the field: how much its ownership differs from what everyone else is playing.
Ownership
Ownership is the percentage of contest entries that include a given player.
Exposure
Exposure is the fraction of your own lineups that include a given player.
Min & Max Exposure
Minimum and maximum exposure are the floor and ceiling you set on how often a player can appear across your lineups.
Uniques (Min Uniques)
Min Uniques is a rule that forces every lineup you keep to differ from every other by at least a set number of players.
Dupes (Duplicate Lineups)
A dupe is a lineup that other entrants also submit; the dupe estimate is how many copies of your lineup are expected to appear in the contest.
Boom / Bust
Boom and bust describe the high and low ends of an outcome: a boom is a ceiling game, a bust is a floor game, and a boom-or-bust play has a wide range between them.
Geomean (Geometric Mean)
Geomean is the geometric mean of a lineup's simulated outcomes, a measure that rewards consistency over boom-or-bust variance.
Optimal %
Optimal percent is a measure of how strong a play a player is, based on how often they belong in the best possible lineup for a slate.
Win %
Win percent is how often a lineup finishes first in the contest across the simulation.
Stack
A stack is a group of players whose performances correlate, like a quarterback with a receiver on the same team, rostered together to compound their upside.
The Field
The field is the set of opponent lineups your entries compete against; in DFS Hero's simulator it is a realistic, modeled field built for each slate.
Sim ROI
Sim ROI is a lineup's estimated return on investment from the contest simulator, projected before you enter rather than measured after results.
GPP vs Cash
GPPs are top-heavy tournaments where a small fraction of the field wins big, while cash games pay roughly the top half evenly; each rewards a different kind of lineup.
Explore other topics
Getting Started
New to DFS Hero? Start here for the core loop: pick a slate, build, simulate, and fill your entries.
3 articlesBuilding Lineups
Set up your player pool and build settings to generate optimized lineups.
2 articlesSimulating Contests
Score your lineups against a realistic field and real contest payouts before you enter.
2 articlesEntries & Late Swap
Upload, fill, and export your contest entries, then swap players after games start.
2 articlesAnalyzing Results
See how your entries finished, learn what winners did, and track your ROI.
1 articleCloud Builds & Playbooks
Save your build steps into a reusable Playbook and schedule it to run server-side before lock.
1 articleHero IQ & Hero Chat
Meet the two AI features: coaching insights from your play history, and an assistant that dials in your build.
2 articlesBankroll Tracker
Track every contest you enter and watch your net profit and ROI over time.
1 articleAccount & Billing
Manage your plan, billing, and account settings.
2 articlesStrategy Library
How to think about contest selection, risk, and bankroll as a DFS player.
2 articlesFAQ
Quick answers to the questions we hear most.
10 articlesStill need help?
The team and community are in Discord every day.