In tennis, spread betting on the ATP Shanghai Masters revolves around game handicaps, where one player is given a positive or negative game adjustment applied to their total across the match. For example, a -4.5 game spread on Carlos Alcaraz means he needs to win by at least five more games than his opponent across all sets for the bet to cash. This differs fundamentally from point spreads in football or basketball, where the margin is applied to the final score — in tennis, the granularity of games within sets creates unique dynamics, as a player can dominate statistically yet still produce tight scorelines in tiebreak-heavy matches.
The spreads market at the Shanghai Masters becomes most valuable in early rounds, where significant skill gaps between seeded players and qualifiers can make moneyline odds unappealing. Bettors should closely monitor surface form on the indoor hard courts, recent fatigue from the Asian swing schedule, and how players perform in service games under pressure. Regarding vig, tennis game spreads typically carry slightly higher margins than moneylines, as bookmakers account for the added complexity and variance. Comparing vig across sportsbooks on these lines can reveal meaningful differences — even a fraction of a point in reduced juice compounds significantly over a full tournament's worth of wagers.
Analysis updated October 11, 2026. Odds data above refreshes hourly.
↑ 7-day trend: ATP Shanghai Masters spreads average vig has worsened by 1.46 percentage points over the past week (from 5.64% to 7.10%). Odds margins are widening, meaning bettors are getting less value per wager.
Cross-Sport spreads Vig Comparison
ATP Shanghai Masters spreads averages 7.10% vig across 4 sportsbooks. Here's how that compares to other active sports:
| Sport | Avg Vig | vs ATP Shanghai Masters |
|---|---|---|
| ATP Shanghai Masters | 7.10% | — |
| WTA Ningbo Open | 6.18% | ATP Shanghai Masters runs 0.92 pts higher |
| CFL | 5.16% | ATP Shanghai Masters runs 1.94 pts higher |
| NCAAF | 4.84% | ATP Shanghai Masters runs 2.26 pts higher |
| NCAAF FCS | 5.84% | ATP Shanghai Masters runs 1.26 pts higher |
Vig Rankings
Frequently Asked Questions
Which sportsbook has the lowest ATP Shanghai Masters spreads vig?
Bovada currently has the lowest vig at 6.42%, earning a grade of C.
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.