A moneyline bet on the ATP US Open is the most straightforward wager available: pick the player who will win the match outright, regardless of the score or number of sets. Unlike spread betting in team sports, there's no handicap applied — it's simply about correctly identifying the winner. Because tennis is a head-to-head sport with only two outcomes, moneyline pricing tends to be more transparent and easier to evaluate than in multi-outcome markets.
The moneyline market offers the most value during the early rounds of the US Open, where significant skill gaps between seeded players and qualifiers can create heavily juiced favorites. In these lopsided matchups, the vig embedded in the favorite's price is often inflated, making it critical to compare lines across books. Bettors should monitor surface form, fitness reports, and how players handle the unique conditions at Flushing Meadows — the DecoTurf hard courts, late-night scheduling, and crowd noise all factor into performance. Moneyline vig in tennis typically runs slightly higher than game spreads and totals, particularly in mismatched first-round contests, so shopping for the sharpest price becomes especially important when backing short-priced favorites.
Analysis updated September 6, 2026. Odds data above refreshes hourly.
↓ 7-day trend: ATP US Open moneyline average vig has improved by 0.84 percentage points over the past week (from 5.86% to 5.03%). Sportsbooks are tightening their lines — a good sign for bettors.
Cross-Sport moneyline Vig Comparison
ATP US Open moneyline averages 5.03% vig across 20 sportsbooks. Here's how that compares to other active sports:
| Sport | Avg Vig | vs ATP US Open |
|---|---|---|
| ATP US Open | 5.03% | — |
| WTA US Open | 4.64% | ATP US Open runs 0.39 pts higher |
| CFL | 4.82% | ATP US Open runs 0.21 pts higher |
| NCAAF | 4.43% | ATP US Open runs 0.60 pts higher |
| NCAAF FCS | 5.68% | ATP US Open runs 0.65 pts lower |
Vig Rankings
| # | Sportsbook | Vig | Grade | Events |
|---|---|---|---|---|
| 1 | Pinnacle | 2.42% | A | 2 |
| 2 | BetOnline.ag | 3.79% | B+ | 2 |
| 3 | LowVig.ag | 3.79% | B+ | 2 |
| 4 | Bovada | 4.11% | B | 2 |
| 5 | Bally Bet | 4.29% | B | 2 |
| 6 | betPARX | 4.29% | B | 2 |
| 7 | BetRivers | 4.29% | B | 2 |
| 8 | Hard Rock Bet | 4.54% | B | 2 |
| 9 | FanDuel | 4.57% | B | 2 |
| 10 | BetMGM | 4.74% | B | 2 |
| 11 | DraftKings | 4.80% | B | 2 |
| 12 | theScore Bet (ESPN Bet) | 5.11% | C+ | 2 |
| 13 | BetAnything | 5.26% | C+ | 2 |
| 14 | Fanatics | 5.33% | C+ | 2 |
| 15 | 888sport | 5.47% | C+ | 2 |
| 16 | MyBookie.ag | 5.69% | C+ | 2 |
| 17 | BetUS | 6.01% | C | 2 |
| 18 | Fliff | 6.79% | C | 2 |
| 19 | Caesars | 6.92% | C | 2 |
| 20 | ReBet | 8.29% | D- | 2 |
Frequently Asked Questions
Which sportsbook has the lowest ATP US Open moneyline vig?
Pinnacle currently has the lowest vig at 2.42%, earning a grade of A.
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 average vig: A+ (under 2%) is exchange-level pricing, A (2–3%) very competitive, B+ (3–4%) above average, B (4–5%) the industry standard, C+ (5–6%) slightly below average, C (6–7%) below average, D (7–8%) high vig, D− (8–10%) very high, F (10%+) predatory.
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, BetAnything). 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.