Dime Lines vs 20-Cent Lines: What 10 Cents Costs per $100, Sport by Sport

The sports betting dime has two meanings. In bookie slang, a dime is a $1,000 bet. The Caesars Sportsbook glossary lists the word as slang for a $1,000 wager and a nickel as a $500 wager. On a betting board, a dime line is a two-way price with 10 cents between the sides. This guide covers the second meaning, because the second one costs you money on every bet.

The short answer first. Near even money, a dime line costs you about $2.22 to $2.38 per $100 risked. A 20-cent line costs about $4.16 to $4.55. One correction before the math: -110/-110 and -120/+100 are both 20-cent lines. Neither one is a dime. The dime versions of those two markets are -105/-105 and -115/+105.

Below you get the cents count, the dollar cost of each width, the prices seven sportsbooks and Kalshi posted on the October 23, 2026 board, 34 years of Nevada hold by sport, and a calculator for any line.

How to Count the Cents

American odds skip the stretch between -100 and +100. Both mean even money. So you measure each price's distance from even money and add the two distances.

The Las Vegas Advisor uses the same count. Its January 2022 answer on nickel lines calls Yankees -140 / Red Sox +130 a dime line and Rams -3 -110 / Raiders +3 -110 a 20-cent line. The Advisor places dime lines mainly in baseball, rare in other sports, and calls 20-cent lines the norm in football and most other sports. A nickel line, 5 cents wide, appears only as an occasional promotion.

What a Line Costs per $100 Risked

Cents describe the gap. Dollars describe the cost. Tadgh Hegarty and Karl Whelan of University College Dublin give the conversion in their 2023 paper on bookmaker margins. If the book applies the same margin to every outcome, your expected payout on a $1 bet equals 1 divided by the sum of the implied probabilities. Call the sum S. Your expected cost per $100 risked is 100 × (1 - 1/S), and both sides of the market carry the same cost.

The paper's footnote flags a common shortcut. Many guides quote S - 1 as the margin. At -110/-110 the shortcut gives 4.76%. The paper gives the gross margin as 4.54%. Unrounded, the cost per dollar risked is 4.545%. The difference is small at these prices, and the smaller number is the one you pay.

So the -110/-110 against -120/+100 comparison is 20 cents against 20 cents, and $4.55 against $4.35. The second market costs $0.20 less per $100 because the same width sits on a bigger price. The real gap, dime against 20 cents, runs $2.13 to $2.16 per $100 near even money. A dime removes 47.6% of the cost of a -110/-110 market.

The Same 10 Cents Costs Less at Bigger Prices

The middle of a line is the average of its two sides on the cents scale. The middle of -150/+130 is -140/+140. The table holds the middle fixed and prices a dime line and a 20-cent line around the same middle.

Two rules come out of the table. First, a 20-cent line costs about twice a dime at every middle, a ratio of 1.91 to 1.99. Second, the dollar cost of any fixed width falls as the favorite grows. A 20-cent line at -210/+190 costs less than a dime at -105/-105. Cents compare cleanly only between lines with the same middle. Across different prices, compare dollars.

Sport by Sport: The October 23, 2026 Board

We read DraftKings prices from ESPN's NFL and NHL odds pages on the evening of October 23, 2026. NBA prices come from the DraftKings column on VegasInsider's board for the 12 games played October 23. On the 13 open Week 7 NFL games, the same column matched ESPN on every spread and moneyline. The World Series Game 1 opener, Rays at Brewers, comes from Sports Illustrated's report on DraftKings' opening prices. Every row uses the formula above.

Read the moneyline rows closely. DraftKings dealt Cardinals +240 / Cowboys -298, a 58-cent line, and Titans +425 / Bengals -575, a 150-cent line. Those cost $4.11 and $4.06 per $100, close to the $4.14 on 49ers -148 / Falcons +124, a 24-cent line. The book holds the dollar cost near $4 and lets the cents widen. A dime line at the Cardinals and Cowboys middle, -274/+264, would cost $0.73.

Baseball is the sport the Las Vegas Advisor ties to dime lines. DraftKings opened World Series Game 1 at Rays +134 / Brewers -162, 28 cents wide. The run line, Rays +1.5 -182 / Brewers -1.5 +150, and the total of 6, over -111 / under -108, landed at the same cost, $4.33 to $4.37 per $100. A dime around the same middle, -153/+143, costs $1.60.

Book by book

Books split on the same games. VegasInsider's Week 7 NFL board listed eight prices per game. We counted the cents on the 13 open spreads at each sportsbook. A 14th game, already final, stays out of the count.

BetMGM dealt 11 of the 13 spreads at 17 or 18 cents. FanDuel dealt 8 of 13 at 22 cents. On one NFL card, your book choice moves the cost from $4.09 to $4.71 per $100 before you pick a side. On the NBA board the same day, nearly every spread at every book sat at 20 cents. BetMGM showed one 10-cent spread, Rockets +4.5 even / Spurs -4.5 -110, and FanDuel showed three at 22.

Hockey showed the widest split. VegasInsider's October 23 NHL board had Canadiens -170 / Blackhawks +142 at DraftKings, 28 cents and $4.11 per $100. Hard Rock dealt the same game at -170 / +130, 40 cents and $6.05. On Avalanche against Lightning, Hard Rock's -120 / -110 cost $6.48 per $100 against $4.27 for DraftKings' -122 / +102.

What Nevada's Hold Says About Baseball

Posted prices show what books charge. Realized hold shows what they kept. UNLV's Center for Gaming Research compiles Nevada Gaming Control Board win and drop by sport back to 1992. Its February 2026 report runs through 2025, 34 years. Summed over all 34 years, football held 5.30%, basketball 5.18%, and baseball 4.05%. Hockey, reported on its own since 2020, held 5.38%. The report's benchmark page lists 5.41%, 5.26%, and 4.14% for the first three. Those figures divide win since 1989 by drop since 1992.

We summed win and drop across each period, so each figure is dollars kept over dollars bet. From 1992 to 2007, baseball held 2.12 points less than football. From 2021 to 2025, the gap shrank to 0.58 points, and baseball held more than basketball. Balanced action on dime lines near even money keeps $2.22 to $2.38 per $100. Balanced action on 20-cent lines keeps $4.16 to $4.55. Baseball's old hold sat near the first range. Its recent hold sits above the second.

Hold is a noisy measure. Results luck and the mix of bets move the number year to year. The shift fits a market where fewer baseball dollars go in at dime prices. The table alone does not prove the cause.

Which Side Pays the Extra 10 Cents

The cost formula assumes the book spreads its margin evenly. Real markets split the margin unevenly. Hegarty and Whelan's soccer data show bets in the lowest probability decile returned $0.83 per $1, a 17% loss, while the top decile lost 2%. In tennis, the bottom decile lost 23% and the top decile 3%. Across all soccer bets, realized losses ran 7.8% against the 6.5% the formula predicted, one-fifth higher. Tennis ran 7.5% against 5.4%, almost forty percent higher.

Baseball runs the other way, and hockey did for a stretch. Linda and Bill Woodland's 1994 Journal of Finance paper found the racetrack favorite-longshot bias in reverse for baseball bettors, with favorites carrying the worse returns. The same paper found the bias too small to beat the commission. Their 2011 Journal of Sports Economics follow-up describes the baseball bias as weak, documented across 22 seasons, and still present. Their 2001 study found NHL bettors overbet favorites from 1990 to 1996. The 2011 paper found the hockey bias held for three more seasons, then disappeared over the last seven.

In soccer and tennis, the longshot pays most of the extra cents on a wide line. In baseball, the research points toward the favorite, and the effect is small. Price both sides before you assume an even split. The de-vig guide covers the methods built for a lopsided margin.

What 10 Extra Cents Does to an Edge

Your edge over the fair probability has to beat S - 1. On a dime at -105/-105, you need a 2.44% edge. On -110/-110, you need 4.76%. Take a side you rate at 51.5%, a 3% edge over the 50% fair price.

Same pick, same handicapping. The dime pays you. The 20-cent line charges you. Over $10,000 risked with no edge, the dime costs $238 and -110/-110 costs $455. If you size with Kelly, run the price you got through the Kelly calculator. A smaller edge means a smaller stake.

Where Dime Lines Still Show Up

• Promotions. Hard Rock Bet ran its "10¢ Summer Sale" from August 1 to August 31, 2026, on pregame MLB moneylines, run lines, and totals priced from -250 to +250. The sale excluded player props, alternate lines, and live bets. The book's own example moved Atlanta -120 / Miami +100 to Atlanta -115 / Miami +105. The standard price in the example was a 20-cent line, and the sale cut its cost from $4.35 to $2.22 per $100.
• Book shopping. On the October 23 NFL board, the median spread ran 18 cents at BetMGM, 20 at DraftKings and Caesars, and 22 at FanDuel. Check each one on the same game before you bet.
• Exchange-style markets. Kalshi quotes on the same NFL board sat 4 to 5 cents apart on its own spread numbers, before trading fees. The prediction markets comparison works through the fee math.

Calculator: Price Any Line in Cents and Dollars

Enter both prices of a two-way market. The calculator returns the width in cents, the cost per $100 risked, the fair price, and the dime and 20-cent lines with the same middle. Add your bet count and stake to see the season cost.

How to Use the Cents

• Count the cents on every two-way market before you bet. On this board, 20 cents was the default for spreads at DraftKings, bet365, and Fanatics.
• Compare dollars, not cents, once prices move past -150. A 58-cent NFL moneyline at -298 cost $4.11 per $100, near the $4.50 average on DraftKings' 20-cent NFL spreads.
• Take a dime whenever a book offers one on a bet you already like. The saving runs $2.13 to $2.16 per $100 near even money.
• Check the fair price with the no-vig calculator and convert prices with the odds converter.
• Track your price against the close with the CLV guide. For the break-even rate at each price, see the -110 vig math.

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Sources and Method

The cost formula comes from Hegarty and Whelan's 2023 working paper, MPRA Paper 116924: equation 2, footnote 4, and the soccer and tennis loss results. A revised version appeared in Applied Economics in 2025. The cents count and the sport norms come from the Las Vegas Advisor's January 16, 2022 answer. The slang definitions come from the Caesars Sportsbook glossary. The direction of the bias comes from Woodland and Woodland in the Journal of Finance (1994), the Southern Economic Journal (2001), and the Journal of Sports Economics (2011), read from their IDEAS abstracts. Prices come from ESPN's NFL and NHL odds pages (DraftKings) and VegasInsider's NFL, NBA, and NHL boards, all read the evening of October 23, 2026, plus Sports Illustrated's October 21, 2026 report on DraftKings' Game 1 opener. Promotion terms come from Hard Rock Bet's August 1, 2026 announcement. Hold by sport comes from UNLV's Nevada Sports Betting Totals: 1984-2025, February 2026.

Every width, cost, average, and period hold comes from the formulas shown. Table costs round to the cent, and gaps use unrounded values. Limits: the board is one day of prices, and lines move by the hour. The cost formula assumes an even split of the margin, which the bias research says real markets break. Nevada hold mixes price, bet mix, and results, so read the table as a trend, not a price.