Every term explained, no jargon left standing.
These guides cover the language and the arithmetic of sports betting across football, basketball, and baseball. They are written in complete sentences rather than bullet fragments, they show the math where math is the point, and they say plainly when something is worth less than it is advertised to be. Start at the top if you are new, or jump to whatever brought you here.
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Betting 101
A fifteen part series that runs from what you are actually betting on through to knowing when to stop. Each part defines the idea, works an example with the arithmetic shown, names the mistake people make with it, and gives you something to apply. These are the first six.
The series hub, with all fifteen parts in running order and a note on which ones repay a second reading.
Read the guide →How Sports Betting WorksA wager is a stake, a price, an outcome, and a settlement, and the thing being bought is the price rather than the team.
Read the guide →How to Read Betting OddsAmerican, decimal, and fractional prices carry the same information, and this page converts between all three in both directions.
Read the guide →Moneylines, Spreads and TotalsOne game supports three different questions, and picking the wrong market means paying for a question you never asked.
Read the guide →Player Props ExplainedA prop is a total with one player inside it, and it carries roughly double the margin of a main side for the same structure.
Read the guide →Implied Probability and Break-EvenEvery price states the win rate it demands before it returns anything, which makes converting it the first move in any evaluation.
Read the guide →Money, tickets and measurement
The second half of the series is about the parts that decide whether an edge ever reaches your account: how much to stake, where to place it, what multi-leg tickets really cost, and how to tell whether any of it is working.
Hitting 60 percent on heavy favourites loses money and 40 percent on underdogs makes it, so a win rate on its own says nothing.
Read the guide →Bankrolls, Units and Bet SizingEven a genuine edge finishes 500 wagers behind roughly one time in eight, and unit sizing is what keeps that from ending the exercise.
Read the guide →Line ShoppingTaking -105 instead of -110 is worth around eleven units across a season of 500 wagers, earned without changing a single opinion.
Read the guide →What Is a Parlay?Parlays compound the ordinary margin rather than adding a special one, and a single leg with no edge taxes every other leg.
Read the guide →What Is a Same-Game Parlay?Legs inside one game are correlated, so the book reprices instead of multiplying, and that margin is the one you cannot measure.
Read the guide →How to Research a Player PropSix ordered steps that begin at the posted number rather than the player and end with your own probability against a fair price.
Read the guide →Tracking Bets, ROI and PerformanceWhat to record for every wager, why ROI is measured against what you staked, and how large a sample a record actually needs.
Read the guide →Start here
If you are new to any of this, read these in order. They cover the three markets that make up almost every wager, and the cost that sits inside all of them.
A walkthrough of how the platform is meant to be used, from reading a board to comparing a projection against a price.
Read the guide →What Is a Moneyline?The outright winner market, how plus and minus prices are read, and how to convert either one into a probability.
Read the guide →What Is a Point Spread?How a handicap turns a mismatch into a near coin flip, what covering means, and why the number three dominates football.
Read the guide →What Is an Over/Under?Totals price the scoring rather than the winner, which makes them the market most sensitive to pace, weather, and pitching.
Read the guide →What Is Juice?The sportsbook margin, where it hides inside a -110 price, and the single habit that reliably reduces how much of it you pay.
Read the guide →Betting GlossaryEvery term used across the site defined in plain English, grouped by odds, value, bet types, and NFL, NBA, and MLB stats.
Read the guide →Value and price
These guides are about the gap between what a market charges and what an outcome is worth. Everything the models do sits on top of this idea.
How expected value is calculated, where the fair probability has to come from, and why a genuine edge still loses regularly.
Read the guide →What Is Closing Line Value?Grading your price against the close, why it needs to be measured in probability, and the four places CLV misleads people.
Read the guide →What Is Arbitrage Betting?The math behind covering both sides across two books, a worked stake split, and the practical reasons it is harder than it reads.
Read the guide →What Is Line Movement?What an opening line represents, why prices move, and what steam and reverse line movement actually describe.
Read the guide →Projections vs. Sportsbook OddsA model projection and a market price answer different questions, and this page explains the gap between the two neutrally.
Read the guide →How Our Models WorkThe categories of data behind the projections and how an edge against the market is identified, without revealing internals.
Read the guide →Promotions and offers
Sportsbook promotions are advertised with large numbers and settled by fine print. These four guides show how to value each type before claiming it. MySpariEdge is not a sportsbook and issues no promotions of its own.
A boost improves a price against the book's own starting number, which is not the same as beating fair value. Here is the test.
Read the guide →What Is a Bonus Bet?The stake is not returned, so a 100 dollar token is not 100 dollars. The valuation formula and how to get the most from one.
Read the guide →What Is a Signup Bonus Bet?Bet and get, first-bet safety net, and deposit match are three different products sharing one name, and they convert very differently.
Read the guide →What Is a Deposit Bonus?Matched funds arrive behind a playthrough requirement, and that requirement has a calculable cost worth running before claiming.
Read the guide →What Is Site Credit?Credit is a balance and a bonus bet is a token. One question in the terms tells you which you are holding and what it is worth.
Read the guide →Markets and boards
Guides tied to specific markets and to the way our boards label what they publish.
No Runs First Inning and its opposite, how each settles, and what actually drives the first frame of a baseball game.
Read the guide →Confidence Tiers ExplainedElite, Strong, Good, and Moderate mean the same thing on every board, and this page defines what each label is claiming.
Read the guide →Free tools that go with these guides.
Then put it to work on a live board
Every idea in these guides shows up on the daily boards, where a model number sits next to the market price with the difference between them called out.