RunsLeft Learn
Strategy, beginner guides, and operator reviews from the team behind RunsLeft. Built to make you a smarter DFS player.
Beginner Guides
What Makes a Good DFS Pick? Reading the Numbers
A framework for evaluating picks — market price, your estimate, variance, data quality, line-shopping, and sizing
After nine articles on math, variance, formats, props, legality, and bankroll, this guide synthesizes the framework for evaluating whether a specific pick is worth playing tonight. The actual decisio…
DFS Bankroll Management for Beginners
How much to bet per entry, why flat sizing is the foundation, and how Kelly criterion actually applies to pick'em slips and sportsbook props
Bankroll discipline is the unsexy part of DFS — and the part that separates players who survive long enough to see their edge materialize from the ones who blow up early. This guide walks through wha…
A Beginner's Glossary of DFS Terms
44 plain-English definitions for the daily fantasy sports vocabulary you'll encounter on every app, sportsbook, and edge page
Daily fantasy sports has its own vocabulary — some borrowed from sports betting, some specific to DFS apps, some RunsLeft-specific. This glossary collects 44 terms across six categories: DFS structur…
DFS Variance Explained: Why Real Edges Still Have Losing Streaks
What normal cold stretches actually look like — and the bankroll discipline that determines whether your edge ever shows up
Variance is the math that's unavoidable even if you've solved the structural rake and avoided the common mistakes. This guide walks through what variance is in DFS, what normal cold stretches look li…
The Math Behind DFS: Why Most Casual Players Lose
An honest look at the operator rake, the variance, and the mistakes that compound the losses — plus what profitable play actually requires
Most casual DFS players lose money over time, and there's a reasonable explanation that has three parts — only one of which is bad luck. This guide walks through the structural math (operator rake on…
Is Daily Fantasy Sports Legal? A State-by-State Snapshot
Where DFS works, where it doesn't, and which operators face restrictions — as of May 2026
Daily fantasy sports is legal in the majority of U.S. states, but the regulatory map has two interesting buckets: five states where standard commercial DFS doesn't operate at all (Hawaii, Idaho, Neva…
Pick'em Contests Explained: PrizePicks, Underdog, and DraftKings Pick6
How pick'em DFS actually works — and how the three biggest apps compare
Pick'em has increasingly become the way most casual players engage with baseball every night. This guide walks through what pick'em actually is, how a slip works from the moment you open the app to t…
How Prop Bets Work in Baseball
The most common MLB player props, how they work at sportsbooks vs. DFS, and the math reality behind each
Prop bets are wagers on individual player outcomes — Aaron Judge's hits, Gerrit Cole's strikeouts, whether Shohei Ohtani goes deep — rather than team-level results. This guide walks through the most…
Sports Betting vs. Daily Fantasy Sports: What's the Difference?
Two products that get lumped together — and how they actually differ in mechanics, legality, and math
Sports betting and daily fantasy sports look similar from the outside, but they work differently under the hood. This guide walks through the three biggest distinctions — who you compete against, why…
What is Daily Fantasy Sports? A Plain-English Guide
How DFS actually works — and how it differs from sports betting
Daily fantasy sports lets you pick a handful of real-life athletes for a single day's slate of games and win money if they outperform the market lines. This guide walks through what DFS is, how it di…