Pinnacle leads with 2.75% vig (A), followed by BetMGM at 3.33%. The spread between #1 and #17 is 5.60% — book choice matters significantly for ATP Italian Open.
The ATP Italian Open, held annually at the Foro Italico in Rome, occupies a critical spot on the tennis calendar as one of the premier clay-court Masters 1000 events and the final major tune-up before Roland Garros. For bettors, clay-court tennis presents distinct dynamics: longer rallies, fewer service breaks decided by raw power, and a surface that heavily rewards baseline consistency and physical endurance. This translates into more predictable outcomes for top-tier clay specialists, but also creates value opportunities when the market overreacts to a big name's hard-court form without adjusting for surface-specific performance. Market depth is strong for the Italian Open — most books offer match winners, set betting, game totals, and increasingly granular live betting options — making it one of the more liquid tennis events outside the Grand Slams.
Vig on ATP Italian Open matches tends to vary significantly by round and profile. Early-round matches featuring heavy favorites can carry wider margins, sometimes exceeding 6-8%, as books price in lopsided outcomes with limited two-way action. As the tournament progresses into the quarterfinals and beyond, margins typically tighten to the 3-5% range, driven by sharper money and more balanced matchups between elite players. Comparing vig across sportsbooks becomes especially valuable in those early rounds, where the spread between the best and worst prices on a single match can represent meaningful edge.
The tournament typically runs in mid-May, landing in a window where clay-court form data from Madrid, Monte Carlo, and Barcelona is freshly available — giving informed bettors a real edge in assessing current fitness and surface adaptation. Weather plays a tangible role in Rome; high temperatures and humidity can sap energy in five-set-caliber matches, favoring younger or fitter athletes. Rain delays disrupt rhythm and can shift momentum unpredictably, creating live-betting opportunities. Injuries accumulated through the demanding spring clay swing are another critical variable — monitoring withdrawal lists and practice reports in the days before the draw is essential for identifying mispriced lines before the market adjusts.
Analysis updated September 6, 2026. Odds data above refreshes hourly.
ATP Italian Open Sportsbook Vig Rankings
| # | Sportsbook | Avg Vig | Grade | Moneyline | Spreads | Totals | Events |
|---|---|---|---|---|---|---|---|
| 1 | Pinnacle | 2.75% | A | 2.35% | 2.91% | 2.99% | 1 |
| 2 | BetMGM | 3.33% | B+ | 3.33% | — | — | 1 |
| 3 | Hard Rock Bet | 3.33% | B+ | 3.33% | — | — | 1 |
| 4 | BetOnline.ag | 4.06% | B | 4.03% | 4.38% | 3.79% | 1 |
| 5 | LowVig.ag | 4.06% | B | 4.03% | 4.38% | 3.79% | 1 |
| 6 | FanDuel | 4.51% | B | 4.51% | — | — | 1 |
| 7 | Fanatics | 4.74% | B | 4.74% | — | — | 1 |
| 8 | DraftKings | 4.75% | B | 4.75% | — | — | 1 |
| 9 | Bally Bet | 4.79% | B | 3.41% | 5.42% | 5.54% | 1 |
| 10 | betPARX | 4.79% | B | 3.41% | 5.42% | 5.54% | 1 |
| 11 | BetRivers | 4.91% | B | 3.41% | 5.78% | 5.54% | 1 |
| 12 | theScore Bet (ESPN Bet) | 5.56% | C+ | 5.56% | — | — | 1 |
| 13 | 888sport | 5.67% | C+ | 5.67% | — | — | 1 |
| 14 | BetUS | 6.30% | C | 5.68% | — | 6.93% | 1 |
| 15 | Fliff | 6.60% | C | 6.60% | — | — | 1 |
| 16 | Caesars | 8.10% | D- | 7.07% | 8.33% | 8.90% | 1 |
| 17 | ReBet | 8.35% | D- | 6.35% | 10.63% | 8.06% | 1 |
Best Line Leaders
Which sportsbook offers the best odds most often across 1 events:
| # | Sportsbook | Best Lines |
|---|---|---|
| 1 | Pinnacle | 3 |
| 2 | BetOnline.ag | 3 |
| 3 | BetRivers | 2 |
| 4 | FanDuel | 1 |
| 5 | ReBet | 1 |
Frequently Asked Questions
Which sportsbook has the lowest vig for ATP Italian Open?
Pinnacle currently has the lowest average vig for ATP Italian Open at 2.75%, earning a grade of A.
How do sportsbook odds compare for ATP Italian Open?
We compare 17 sportsbooks for ATP Italian Open. The vig ranges from 2.75% (Pinnacle) to 8.35% (ReBet).
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.