Founder, Parity Odds
Ryan H.
Ryan built this site's pricing engine to answer one question before every bet: does this price beat the fair odds? He bets NFL, college football, NBA, and NHL, and judges picks on closing-line value rather than wins.
He writes and checks every Learn post. Drafts start from our own odds data and are produced with AI writing tools; Ryan reviews the numbers and the claims before anything goes live.
Posts by Ryan H.
- Player propsWhy do player prop overs lose more often?Many player stats are right-skewed: the average sits above a typical game. Comparing that average to the line can make the over look better than it is. · 3 min read
- Player propsAnytime touchdown scorer odds, explainedAn anytime-TD price converts to an implied chance like any odds, but there's no second side to check it against, so shop it across books. · 4 min read
- Player propsHow to devig a one-sided prop, like anytime touchdown scorerAnytime-TD and goalscorer markets can't be devigged the normal way: there's no second side. Compare the price to your own number instead. · 4 min read
- Player propsHow are player props priced?A book turns a projection into a distribution to price every number, and why fewer sharp books trading props pushes the margin wider than a game line's. · 4 min read
- Player propsWhat is a same-game parlay?A same-game parlay combines two or more bets from one game onto one ticket, priced on how the legs correlate instead of multiplying each leg's odds. · 5 min read
- Player propsWhat is a prop bet?A prop bet is a wager on something other than the final score — a player's stats or an in-game event — and it usually carries more vig than a spread or total. · 4 min read
- Promos and bonus betsThe sportsbook promo terms that actually change what it's worthMinimum odds, expiry, eligible markets, max stake, and whether the stake comes back as cash or a bonus bet decide a promo's real value. · 4 min read
- Promos and bonus betsHow to hedge a no-sweat betBet the other side at a second book while your no-sweat bet is live, and you can lock in a guaranteed profit instead of the small loss a normal hedge costs. · 4 min read
- Promos and bonus betsDoes matched betting work in the US?Not the way it works in the UK: most states have no betting exchange, and sign-up offers do not repeat weekly, so it reduces to one bonus-bet hedge per offer. · 3 min read
- Promos and bonus betsDeposit match playthrough: what the rollover actually costsA deposit match unlocks only after you wager a multiple of it. At -110 with no edge, each pass through the rollover costs about 4.5% of what you bet. · 4 min read
- Promos and bonus betsEarly payout promos: what they add to a moneyline betIt pays your moneyline as a win once your team leads by a set margin, even if they lose. That comeback is rare, so it adds only a little to the bet's value. · 4 min read
- Promos and bonus betsWhat is parlay insurance, and what is it actually worth?It refunds your stake, usually as a capped bonus bet, when a parlay loses by one leg. Its value depends less on the odds than on how many legs you add. · 5 min read
- Promos and bonus betsHow to stack sportsbook promos, and what actually stacksStacking usually means separate offers on separate bets, not two offers on one wager. Most books allow one offer per bet slip; check the terms first. · 4 min read
- Promos and bonus betsShould you use a bonus bet on a parlay?Parlaying lifts a bonus bet's value through three or four legs, but each leg pays the vig again, so a single bet at the same odds almost always keeps more. · 5 min read
- Promos and bonus bets"Bet $5, get $200" promos: what they're actually worthAround $150 if the $200 is guaranteed, or $75 to $135 if it pays only when your $5 bet wins, because bonus bets pay winnings, not face value. · 5 min read
- Promos and bonus betsThe main types of sportsbook promotions, and what each is worthDeposit matches, bet-and-gets, no-sweats, boosts, and parlay insurance all reduce to the same math: the underlying bet's own value, plus what the promo adds. · 5 min read
- Promos and bonus betsShould you use a profit boost on a parlay?Sometimes, but the bar is higher than on a single bet: parlay vig compounds with every leg, so the break-even boost percentage rises too. · 4 min read
- Promos and bonus betsWhat is an odds boost, and when is it actually worth taking?An odds boost swaps a bet's price for a better one. It's worth taking exactly when that new price still beats the fair odds, which isn't automatic. · 4 min read
- Promos and bonus betsWhat is a no-sweat bet? How the refund works and what it's worthIt refunds a losing bet as a bonus bet, not cash, on DraftKings and other books. A $50 no-sweat bet is worth about $9 at -110 and $25 at +300. · 4 min read
- Promos and bonus betsWhat's a good bonus bet conversion rate?A good conversion rate is roughly 70 to 80% of face value; below 60%, the odds or the hedge price aren't good enough yet. · 4 min read
- Promos and bonus betsHow to use a bonus bet (and why long odds convert better)A bonus bet never returns its stake. That one rule decides where to place it. · 2 min read
- Promos and bonus betsProfit boosts vs. odds boosts: what each one is worthA 50% profit boost doesn't make a bet 50% better. Here's the math, and when to pass. · 2 min read
- Betting mathWhat de-vigging means, and why we use sharp booksEvery price includes the book's margin. Take it out and you're left with the fair chance. · 1 min read
- StrategyWhy we grade on closing-line value, not win rateWins and losses take thousands of bets to mean anything. Beating the close shows up far sooner. · 1 min read