A moneyline bet on the ATP Cincinnati Open is the most straightforward wager in tennis — simply pick which player will win the match outright, regardless of the score or number of sets. Unlike team sports where moneylines compete with point spreads for betting volume, the moneyline is the primary market in tennis, making it the most liquid and heavily traded option for this Masters 1000 event. Odds reflect each player's implied probability of winning, with favorites carrying negative odds and underdogs posted at positive values.
The moneyline market at the Cincinnati Open offers its best value during the early rounds, where surface-form mismatches and fatigue from the compressed summer hard-court swing create exploitable lines. Bettors should closely monitor player scheduling — many competitors arrive directly from Montreal, and accumulated fatigue can dramatically affect performance. Because the moneyline is the flagship tennis market, it typically carries tighter vig than alternatives like set betting, correct score, or total games, as sportsbooks compete aggressively for volume. However, vig can widen significantly on lopsided matchups featuring heavy favorites, so comparing prices across books becomes especially important when odds dip below -400.
Moneyline Vig Rankings
| # | Sportsbook | Vig | Grade | Events |
|---|---|---|---|---|
| 1 | Pinnacle | 2.59% | A | 11 |
| 2 | LowVig.ag | 4.00% | B | 11 |
| 3 | BetOnline.ag | 4.00% | B | 11 |
| 4 | Bovada | 4.39% | B | 7 |
| 5 | FanDuel | 4.43% | B | 11 |
| 6 | DraftKings | 4.85% | B | 11 |
| 7 | Hard Rock Bet | 5.19% | C+ | 11 |
| 8 | BetAnything | 5.23% | C+ | 7 |
| 9 | Fanatics | 5.27% | C+ | 11 |
| 10 | BetUS | 5.28% | C+ | 7 |
| 11 | BetRivers | 5.42% | C+ | 11 |
| 12 | Bally Bet | 5.42% | C+ | 11 |
| 13 | betPARX | 5.42% | C+ | 11 |
| 14 | 888sport | 5.59% | C+ | 11 |
| 15 | theScore Bet (ESPN Bet) | 6.02% | C | 11 |
| 16 | BetMGM | 6.07% | C | 11 |
| 17 | Caesars | 6.76% | C | 11 |
| 18 | Fliff | 7.14% | D | 7 |
| 19 | ReBet | 7.85% | D | 11 |
Upcoming Moneyline Lines
| Matchup | Time | 888sport | Fanatics | DraftKings | ReBet | theScore Bet |
|---|---|---|---|---|---|---|
| Nuno Borges @ Andrey Rublev | Aug 18, 3:00 PM | +138 / -175 | +150 / -180 | +142 / -174 | +147 / -190 | +150 / -190 |
| Lorenzo Musetti @ Michael Zheng | Aug 18, 4:10 PM | +150 / -188 | +155 / -190 | +162 / -200 | +149 / -192 | +150 / -190 |
| Daniel Merida Aguilar @ Taylor Fritz | Aug 18, 4:30 PM | -450 / +320 | -450 / +335 | -478 / +353 | -461 / +320 | -440 / +310 |
| Daniil Medvedev @ Brandon Nakashima | Aug 18, 6:30 PM | -138 / +110 | -135 / +110 | -137 / +113 | -141 / +106 | -135 / +110 |
| Adam Walton @ Jaime Faria | Aug 18, 9:00 PM | -150 / +120 | -150 / +125 | -153 / +125 | -158 / +118 | -155 / +125 |
Frequently Asked Questions
What is a moneyline bet?
A moneyline bet is the simplest form of sports wagering — you're picking which team will win the game outright, with no point spread involved. The odds reflect each team's implied probability of winning. Favorites have negative odds (e.g., -150) and underdogs have positive odds (e.g., +130).
Why does moneyline vig vary by matchup?
Moneyline vig is lowest on evenly matched games and highest on lopsided matchups. When a heavy favorite is -500, the book needs a wide margin on the underdog side to balance risk. Close games near pick'em (-110/-110) will always have the tightest vig.
What is vig (vigorish) in sports betting?
Vig — short for vigorish, also called juice or overround — is the margin a sportsbook builds into its odds. It's the difference between the true probability of an outcome and what the odds imply. Lower vig means you keep more of your winnings on every bet. For example, a standard -110/-110 line has about 4.76% vig.
How often is this data updated?
We pull fresh odds from The Odds API three times per day — at 6:00 AM, 2:00 PM, and 10:00 PM UTC. Each snapshot captures the latest lines from every sportsbook that has posted odds. The timestamp at the top of the page shows the most recent refresh.
How is the vig grade calculated?
Each sportsbook is graded on a letter scale based on average vig: A+ (under 2%) is exceptional, A (2–3%) is excellent, B+ (3–4%) is above average, B (4–5%) is the industry standard, C (5–6%) is below average, and D (above 6%) indicates high-juice markets.
Why does lower vig matter for bettors?
Lower vig directly impacts your long-term returns. A bettor placing $1,000 per week at a book with 4% vig loses roughly $40/week to the house edge. At 2% vig, that drops to $20/week — a $1,040 difference over a year. For serious bettors, shopping for lower vig is one of the most reliable ways to improve profitability.
What sportsbooks do you track?
We track both regulated US sportsbooks (DraftKings, FanDuel, BetMGM, Caesars) and offshore books (Bovada, BetOnline, MyBookie, BetUS, LowVig.ag, BetAnySports). Data comes from The Odds API, which aggregates real-time lines from licensed sources.
How We Calculate These Numbers
- Data Source
- All odds on this page come from The Odds API, which aggregates real-time lines from licensed US and offshore sportsbooks. We track moneyline, spread, and totals markets across every sport with active betting lines.
- Update Frequency
- We pull a fresh snapshot of every tracked market three times per day — at 6:00 AM, 2:00 PM, and 10:00 PM UTC. Each snapshot captures the latest lines from every sportsbook that has posted odds for a given event. The timestamp at the top of each page tells you exactly when the data was last refreshed.
- Vig Calculation
- Vig (short for vigorish, also called juice or overround) measures the margin a sportsbook builds into its odds. We calculate it by converting the odds on each side of a market to implied probabilities, summing those probabilities, and subtracting 100%. For example, a market priced at -110/-110 implies 52.38% on each side — a total of 104.76%, meaning a vig of 4.76%. Lower vig means better value for bettors because you keep more of your winnings.
- Per-Market Breakdown
- We compute vig separately for each market type: moneyline (h2h), point spreads, and totals (over/under). The "average vig" shown for each sportsbook is the mean across all market types weighted by the number of events sampled in each market.
- Grading Scale
- Every sportsbook receives a letter grade based on its average vig: A+ (under 2%) is exchange-level pricing. A (2–3%) is very competitive. B+ (3–4%) is above average. B (4–5%) is the industry standard — a -110/-110 line is 4.76%. C+ (5–6%) is slightly below average. C (6–7%) is below average. D (7–8%) is high vig. D− (8–10%) is very high vig. F (10%+) is predatory pricing. See the full Vig Index Methodology for formulas, worked examples, and known limitations.
- Trend Tracking
- We store daily snapshots for 30 days, allowing us to show 24-hour and 7-day vig trends. A downward trend (improving) means sportsbooks are tightening their lines — often in response to increased competition or higher betting volume as a season heats up.