The ATP US Open presents one of the most dynamic betting landscapes in tennis. Played on DeWitt Hamilton hard courts in Flushing Meadows, the surface produces faster, more predictable rallies than clay but with enough variability — especially in evening sessions under the lights — to create genuine pricing inefficiencies. The tournament's best-of-five-set format for men's singles means favorites convert at a higher rate than in best-of-three events, yet sportsbooks don't always adjust their lines proportionally. Market depth is strong across match winners, set betting, totals, and in-play markets, giving bettors multiple angles to exploit discrepancies between books.
Vig on US Open match markets tends to be tighter than regular ATP Tour events, particularly in the later rounds. The sheer volume of public betting interest during a Grand Slam compels sportsbooks to sharpen their lines to remain competitive, and the two-week duration gives oddsmakers ample data to refine pricing as the draw progresses. Early-round matches featuring qualifiers or lesser-known players typically carry wider margins — sometimes 6-8% overround — because books have less confidence in their models and less two-way action to balance the book. By the quarterfinals and beyond, margins on headline matches can compress to 3-4% or lower at the sharpest books.
Several factors make US Open odds particularly volatile. Late-August heat and humidity in New York significantly affect player stamina, disproportionately impacting older competitors and those who had deep runs in the preceding hard-court swing through Montreal, Cincinnati, and Winston-Salem. Scheduling quirks matter too — players assigned to the Arthur Ashe Stadium roof-closed night sessions face different conditions than those playing midday on outer courts. Injury monitoring is critical, as the US Open falls at the end of a grueling summer stretch, and soft-tissue issues frequently surface. Bettors who track practice reports, pre-tournament press conferences, and real-time scheduling announcements often find edges before lines adjust.
Analysis updated September 6, 2026. Odds data above refreshes hourly.
Ben Shelton @ Alexander Zverev
Best moneyline price: Alexander Zverev -1468 at Pinnacle; Ben Shelton +10000 at FanDuel.
| Side | Market | Best Line | Worst |
|---|---|---|---|
| Alexander Zverev | Moneyline | Pinnacle: -1468 | -100000 |
| Ben Shelton | Moneyline | FanDuel: +10000 | +994 |
Frequently Asked Questions
What are the best ATP US Open lines today?
The table below shows which sportsbook has the best available price on each side of every upcoming ATP US Open event. Line shopping across multiple books can save you 1–3% per bet compared to sticking with a single sportsbook.
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 every hour, on the hour (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 every hour, on the hour (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.