Sports Betting Knowledge Hub

A contract pays $1 if you're right and $0 if you're wrong. The price in cents is the market's guess at the odds, and you can sell any time before the game ends. Here's how to read it, trade it and avoid the fees that catch beginners.

Cash out lets you settle a bet before it ends for an amount the sportsbook offers. Here's how that offer is figured, why it's usually below fair value and when it makes sense to take it.

The puck line is hockey's spread, almost always 1.5 goals. Overtime and shootout wins are by one goal, and empty-net goals swing a lot of these bets.

The run line is baseball's point spread, almost always 1.5 runs. The favorite at -1.5 has to win by 2 or more. The underdog at +1.5 can lose by 1 and still cash.

A futures bet is a bet on something decided later, like who wins the championship or MVP. Big payouts, long waits and a bigger cut for the book. Here's how they work.

A unit is your standard bet size, set as a small percentage of your bankroll. Here's how to set yours, why bettors talk in units instead of dollars and how big a unit should be.

ATS means against the spread. A team that covers the spread wins ATS, even if it loses the game. Here's how to read ATS records and why they're not a betting system.

PK means pick'em. The spread is zero, so you just need your team to win. If the game ends in a tie, it's a push.

A push is a tie with the sportsbook. Nobody wins, nobody loses and you get your stake back. Here's when pushes happen, how they hit parlays and why half points exist.

A teaser is a parlay where you move the spread in your favor, usually 6 points in the NFL, in exchange for a lower payout. Here's how it works and why the key numbers 3 and 7 matter.

A parlay ties two or more bets into one ticket. Every leg has to win, and the payout multiplies. Here's how the math works, how to figure your payout and why the book loves them.

A prop bet is a bet on something inside the game instead of the final result, like how many points a player scores. Here's how player props and game props work and why the line has a half point.

The over/under, or total, is a bet on the combined score. You don't care who wins. If the total is 44.5, you're betting the two teams score 45 or more (over) or 44 or fewer (under).

A moneyline bet is the simplest bet there is: pick who wins. The odds tell you how much you risk and how much you win. Here's how to read -150 and +130 without a calculator.

The spread is a head start. -6.5 means the favorite has to win by 7 or more. +6.5 means the underdog can lose by up to 6 and still cash. Here's how to read any spread in ten seconds.

Kalshi and Polymarket US are regulated by the CFTC, but dozens of states say sports contracts are gambling. Courts are split and the Supreme Court has been asked to decide. Here's where it stands in October 2026.

US users trade through Polymarket US, a separate CFTC-regulated app. Here's how to sign up, deposit, buy your first contract, sell early and withdraw.

Sign up, verify your ID, deposit at least $10, then buy Yes or No on any game. Here's every step, how the fee works, how to cash out early by selling, and how to withdraw.

Both are CFTC-regulated prediction markets for US users, and both pay $1 per winning contract. The real differences are fees, deposit options and which one has the better price on the game you want.

"Team X is 8-2 in their last 10 against Team Y" sounds like information. Run the actual math on how often records like that show up by pure chance, and it stops sounding like anything at all.

Ten real, concrete steps, not vague advice, plus every free 24-hour helpline that's actually still active. If any of this feels aimed at you, it probably is, and that's exactly why it's here.

Not a hypothetical. Real people, real dollar amounts, court filings and their own words, and what it actually took for some of them to get out.

Live betting isn't inherently reckless. Using it to chase the game you're currently losing is. The difference is whether you decided on the position before kickoff or invented it in the moment because you're down.

The next bet doesn't know or care what the last one did. Sizing it up specifically because you just lost adds real risk without adding a single point of real edge.

Every one of these shows up constantly, and every one of them is avoidable. This is the full checklist, organized by type, not just the obvious ones.

A sportsbook makes its money on bettors it expects to lose over time. A bettor who's consistently beating the closing line is telling the book the opposite, and the book's response is to shrink how much action that bettor can place, not to compete harder for the business.

Betting 200 games a season without a real edge just means paying the vig 200 times instead of 20. And a real +EV bettor who only takes 20-30 games a year might still finish that season in the red, purely from variance.

A smaller bankroll is mathematically more likely to hit zero first than a bigger one, even at perfectly fair odds. Add the vig on top of that gap, and the house's edge in capital becomes just as real as its edge in price.

A half point or a few cents of better price feels tiny on one bet. Run the same edge across a real season of bets and it's the difference between barely breaking even and a genuinely good year.

One side says splits are noisy and only measure a slice of the market. The other side points at real lines moving against heavy public action and asks how that's a coincidence. Both arguments are worth understanding, because neither one is wrong.

A closing line isn't one person's guess. It's a model, tested by real money from a market-maker book, then re-priced by every other book in the industry before you ever see it.

A losing week or month can happen to a genuinely good bettor. That's variance. A losing year almost always traces back to a specific, avoidable habit, and there's a real list of them.

Most disciplined bettors use a flat unit of 1–2% of bankroll per bet. The point isn't maximizing profit. It's surviving the losing stretches that a real edge still produces.

Three reasons: new information, money arriving on one side, and books copying a move somewhere else. Telling them apart is most of what market-reading is.

The minus number is what you risk to win $100. The plus number is what you win on a $100 risk. Both are just a payout and a break-even probability wearing a costume.

Sportsbook -110 pricing costs you $9.09 out of every $100 you win. On Novig, the same coin flip costs you $1.50, and you keep $98.50. Here's the real math, not a marketing line.

There's a version of hedging where you bet both sides of a game and win both. That's rare. The rest of the time it's a trade: real value given up for certainty most bettors don't actually need.

Every board gives you the same three bets, priced three different ways off the same opinion. Here is how each one settles, then five real games where you call the outcome yourself and get graded on the spot.

Leaving money in your account does not keep it away from the taxman, and it is the easiest money in the world to bet back. Here is the right answer for twelve different kinds of bettor.

A same game parlay puts every leg inside one game. That sounds like a normal parlay and it isn't, because the legs affect each other, and the book prices that in.

A round robin breaks your picks into every smaller parlay combination, so you can lose a leg and still get paid. That safety net is real, and you pay for it.

The math is real and the profit is guaranteed. Almost nobody makes a living off it anyway. The gap between those two facts is the whole story.

The price on screen is what the book thinks, plus their cut. Strip the cut off and you get their real opinion, which is the number you should be comparing your own read against.

Every bet you place has a fee baked into the price. It never shows up on your slip, and it is the main reason bettors who pick winners half the time still lose money.

Because you pay the vig on every leg, and it compounds. One -110 bet carries about 4.5% hold; a five-leg parlay of the same bets carries about 21%.

Arbitrage locks a small guaranteed profit by betting both sides at different books. +EV takes on real risk for a bigger long-run edge. Same skill of line shopping, opposite risk profiles.

+EV means the bet's average outcome is a profit. Your estimated win probability is higher than the probability the price demands. It says nothing about whether this particular bet wins.

CLV is the difference between the price you got and the price the market settled on right before kickoff. It's the fastest available read on whether your bets are any good.