Vig Breakdown
Average
C+ · #6 of 19
Moneyline
Spreads
Totals
888sport generally posts competitive ATP US Open odds, though they rarely lead the market on outright winner or match-level pricing. Their margins on Grand Slam tennis tend to sit in a reasonable range, but bettors who line-shop will often find slightly sharper numbers at exchange-based platforms or specialist tennis books. Where 888sport holds up well is in the breadth of their US Open match markets — they typically cover early-round matches with decent depth, including set betting, totals, and handicap lines, which some mid-tier books thin out during the opening days of the draw.
Recreational bettors and those who value a straightforward interface with reliable market availability will find 888sport serviceable for US Open wagering. However, sharp bettors or high-volume tennis specialists are likely to notice the slightly wider margins, particularly on lower-profile matches and in-play markets where pricing can lag behind faster-moving competitors. The book suits casual punters placing pre-match wagers on marquee matchups more than grinders hunting for edge across the full draw.
Upcoming ATP US Open Events
| Matchup | Moneyline | Time |
|---|---|---|
| Adam Walton @ Wu Yibing | -125 / +100 | Aug 30, 3:00 PM |
| Alexander Shevchenko @ Dino Prizmic | +230 / -300 | Aug 30, 3:00 PM |
| Arthur Rinderknech @ Sho Shimabukuro | -333 / +250 | Aug 30, 3:00 PM |
| Marton Fucsovics @ Daniel Merida Aguilar | -500 / +350 | Aug 30, 3:00 PM |
| Hamad Medjedovic @ Kamil Majchrzak | +110 / -138 | Aug 30, 3:00 PM |
Frequently Asked Questions
How does 888sport rank for ATP US Open?
888sport has 5.46% average vig for ATP US Open, earning a grade of C+. They rank #6 of 19 sportsbooks we track for this sport.
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.