The WTA China Open, held annually in Beijing as a prestigious WTA 1000 event, presents a compelling betting market due to the volatile nature of women's tennis. Unlike men's best-of-five formats at Grand Slams, the WTA's best-of-two-sets structure means upsets occur with greater frequency, creating value opportunities for sharp bettors who understand matchup dynamics. Market depth for the China Open is generally strong given its top-tier tournament status — moneylines, set betting, game totals, and prop markets are widely available at major sportsbooks. However, liquidity tends to thin out considerably in early rounds when lesser-known qualifiers face seeded players, which directly impacts how aggressively books shade their lines.
Vig on WTA China Open markets tends to run moderately wide compared to ATP equivalents, largely because the perceived unpredictability of the women's game leads sportsbooks to build in extra margin as a hedge against variance. For marquee matches involving top-10 players, margins typically tighten to the 4-6% range across competitive books, but early-round matchups featuring unranked or qualifying-round players can see vig climb to 7-9% or higher. Bettors comparing odds across multiple sportsbooks can often shave significant margin, particularly on these less prominent matches where pricing discrepancies between books are most pronounced.
The China Open typically takes place in late September or early October, falling during a critical stretch of the WTA season when players are either pushing for WTA Finals qualification or managing accumulated fatigue and injuries from a long campaign. This timing is a key factor bettors should weigh — motivation levels vary wildly, and late-season withdrawals or underperformances from fatigued stars are common. Beijing's outdoor hard courts and occasionally humid conditions can also influence play styles, favoring aggressive baseliners who can dictate points quickly. Surface form from the preceding North American and Asian hard-court swing provides useful predictive data, and bettors who track recent head-to-head records and performance on similar court speeds will find edges that casual markets often overlook.
Analysis updated September 6, 2026. Odds data above refreshes hourly.
Ann Li @ Ashlyn Krueger
Best moneyline price: Ashlyn Krueger +125 at Hard Rock Bet; Ann Li -132 at Pinnacle.
| Side | Market | Best Line | Worst |
|---|---|---|---|
| Ashlyn Krueger | Moneyline | Hard Rock Bet: +125 | +105 |
| Ann Li | Moneyline | Pinnacle: -132 | -155 |
| Ashlyn Krueger +1.5 | Spread | Pinnacle: -105 | -111 |
| Ann Li -1.5 | Spread | Pinnacle: -109 | -125 |
| Over 21.5 | Total | BetRivers: -129 | -135 |
| Under 21.5 | Total | ReBet: -102 | -105 |
| Ashlyn Krueger +0.5 | Spread | Bally Bet: +114 | +114 |
| Ann Li -0.5 | Spread | Bally Bet: -152 | -152 |
| Over 22.5 | Total | LowVig.ag: +110 | +100 |
| Under 22.5 | Total | LowVig.ag: -130 | -134 |
| Ashlyn Krueger +2.5 | Spread | BetRivers: -120 | -130 |
| Ann Li -2.5 | Spread | Caesars: -110 | -112 |
| Over 22 | Total | Pinnacle: -107 | -115 |
| Under 22 | Total | Pinnacle: -107 | -115 |
Maria Camila Osorio Serrano @ Coco Gauff
Best moneyline price: Coco Gauff -1120 at DraftKings; Maria Camila Osorio Serrano +860 at FanDuel.
| Side | Market | Best Line | Worst |
|---|---|---|---|
| Coco Gauff | Moneyline | DraftKings: -1120 | -1613 |
| Maria Camila Osorio Serrano | Moneyline | FanDuel: +860 | +650 |
| Coco Gauff -6.5 | Spread | Pinnacle: +107 | -111 |
| Maria Camila Osorio Serrano +6.5 | Spread | BetRivers: -122 | -145 |
| Over 18.5 | Total | ReBet: -104 | -120 |
| Under 18.5 | Total | Pinnacle: -108 | -132 |
| Coco Gauff -5.5 | Spread | betPARX: -190 | -190 |
| Maria Camila Osorio Serrano +5.5 | Spread | betPARX: +140 | +140 |
Lin Zhu @ Donna Vekic
Best moneyline price: Donna Vekic -175 at Hard Rock Bet; Lin Zhu +165 at Pinnacle.
| Side | Market | Best Line | Worst |
|---|---|---|---|
| Donna Vekic | Moneyline | Hard Rock Bet: -175 | -204 |
| Lin Zhu | Moneyline | Pinnacle: +165 | +140 |
| Donna Vekic -3.5 | Spread | BetOnline.ag: +110 | -111 |
| Lin Zhu +3.5 | Spread | ReBet: -125 | -130 |
| Over 21.5 | Total | Pinnacle: -104 | -124 |
| Under 21.5 | Total | BetRivers: -108 | -122 |
| Donna Vekic -2.5 | Spread | BetRivers: -125 | -130 |
| Lin Zhu +2.5 | Spread | BetRivers: -106 | -110 |
| Donna Vekic -1.5 | Spread | betPARX: -152 | -152 |
| Lin Zhu +1.5 | Spread | betPARX: +112 | +112 |
| Donna Vekic -3 | Spread | Pinnacle: -110 | -120 |
| Lin Zhu +3 | Spread | Pinnacle: -104 | -110 |
Elise Mertens @ Katie Volynets
Best moneyline price: Katie Volynets +107 at Pinnacle; Elise Mertens -120 at Hard Rock Bet.
| Side | Market | Best Line | Worst |
|---|---|---|---|
| Katie Volynets | Moneyline | Pinnacle: +107 | -105 |
| Elise Mertens | Moneyline | Hard Rock Bet: -120 | -130 |
| Katie Volynets +0.5 | Spread | LowVig.ag: +100 | -113 |
| Elise Mertens -0.5 | Spread | Bally Bet: -118 | -125 |
| Over 21.5 | Total | Pinnacle: -111 | -125 |
| Under 21.5 | Total | Pinnacle: -103 | -117 |
| Katie Volynets +1 | Spread | Pinnacle: -107 | -115 |
| Elise Mertens -1 | Spread | Pinnacle: -107 | -115 |
Elina Svitolina @ Katerina Siniakova
Best moneyline price: Katerina Siniakova +320 at FanDuel; Elina Svitolina -350 at 888sport.
| Side | Market | Best Line | Worst |
|---|---|---|---|
| Katerina Siniakova | Moneyline | FanDuel: +320 | +260 |
| Elina Svitolina | Moneyline | 888sport: -350 | -429 |
| Katerina Siniakova +4.5 | Spread | LowVig.ag: +110 | -110 |
| Elina Svitolina -4.5 | Spread | Caesars: -130 | -134 |
| Over 20.5 | Total | LowVig.ag: +105 | -115 |
| Under 20.5 | Total | BetRivers: -121 | -125 |
| Katerina Siniakova +3.5 | Spread | Bally Bet: +145 | +145 |
| Elina Svitolina -3.5 | Spread | Bally Bet: -200 | -200 |
| Katerina Siniakova +5 | Spread | Pinnacle: -117 | -125 |
| Elina Svitolina -5 | Spread | Pinnacle: +102 | -105 |
| Over 20 | Total | Pinnacle: -111 | -120 |
| Under 20 | Total | Pinnacle: -103 | -110 |
Paula Badosa @ Jelena Ostapenko
Best moneyline price: Jelena Ostapenko +162 at FanDuel; Paula Badosa -168 at Pinnacle.
| Side | Market | Best Line | Worst |
|---|---|---|---|
| Jelena Ostapenko | Moneyline | FanDuel: +162 | +135 |
| Paula Badosa | Moneyline | Pinnacle: -168 | -196 |
| Jelena Ostapenko +2.5 | Spread | LowVig.ag: +100 | -110 |
| Paula Badosa -2.5 | Spread | LowVig.ag: -120 | -143 |
| Over 21.5 | Total | Pinnacle: -113 | -125 |
| Under 21.5 | Total | Pinnacle: -102 | -119 |
| Jelena Ostapenko +1.5 | Spread | Bally Bet: +123 | +123 |
| Paula Badosa -1.5 | Spread | Bally Bet: -167 | -167 |
| Jelena Ostapenko +3 | Spread | Pinnacle: -113 | -120 |
| Paula Badosa -3 | Spread | Pinnacle: -101 | -110 |
Storm Hunter @ Maria Sakkari
Best moneyline price: Maria Sakkari -240 at Hard Rock Bet; Storm Hunter +221 at Pinnacle.
| Side | Market | Best Line | Worst |
|---|---|---|---|
| Maria Sakkari | Moneyline | Hard Rock Bet: -240 | -290 |
| Storm Hunter | Moneyline | Pinnacle: +221 | +175 |
| Over 21.5 | Total | LowVig.ag: +100 | -117 |
| Under 21.5 | Total | Bally Bet: -114 | -131 |
| Maria Sakkari -2.5 | Spread | Bally Bet: -180 | -180 |
| Storm Hunter +2.5 | Spread | Bally Bet: +130 | +130 |
| Maria Sakkari -3.5 | Spread | BetRivers: -129 | -137 |
| Storm Hunter +3.5 | Spread | LowVig.ag: +117 | -106 |
| Maria Sakkari -4 | Spread | Pinnacle: -109 | -115 |
| Storm Hunter +4 | Spread | Pinnacle: -105 | -115 |
| Over 21 | Total | Pinnacle: -108 | -115 |
| Under 21 | Total | Pinnacle: -106 | -115 |
Iga Swiatek @ Xinyu Gao
Best moneyline price: Xinyu Gao +2890 at Pinnacle; Iga Swiatek -4500 at FanDuel.
| Side | Market | Best Line | Worst |
|---|---|---|---|
| Xinyu Gao | Moneyline | Pinnacle: +2890 | +1050 |
| Iga Swiatek | Moneyline | FanDuel: -4500 | -20000 |
| Xinyu Gao +7.5 | Spread | LowVig.ag: +125 | +108 |
| Iga Swiatek -7.5 | Spread | LowVig.ag: -145 | -167 |
| Over 16.5 | Total | LowVig.ag: +116 | +100 |
| Under 16.5 | Total | betPARX: -134 | -145 |
| Xinyu Gao +8 | Spread | Pinnacle: -109 | -115 |
| Iga Swiatek -8 | Spread | Pinnacle: -107 | -115 |
| Over 16 | Total | Pinnacle: -115 | -120 |
| Under 16 | Total | Pinnacle: -102 | -110 |
Harriet Dart @ Iva Jović
Best moneyline price: Iva Jović -1100 at Hard Rock Bet; Harriet Dart +810 at FanDuel.
| Side | Market | Best Line | Worst |
|---|---|---|---|
| Iva Jović | Moneyline | Hard Rock Bet: -1100 | -1450 |
| Harriet Dart | Moneyline | FanDuel: +810 | +580 |
| Iva Jović -6.5 | Spread | ReBet: -105 | -115 |
| Harriet Dart +6.5 | Spread | Pinnacle: -107 | -143 |
| Over 18.5 | Total | BetOnline.ag: +100 | -115 |
| Under 18.5 | Total | Pinnacle: -114 | -129 |
| Iva Jović -5.5 | Spread | betPARX: -190 | -190 |
| Harriet Dart +5.5 | Spread | betPARX: +140 | +140 |
Leylah Fernandez @ Kamilla Rakhimova
Best moneyline price: Kamilla Rakhimova +283 at LowVig.ag; Leylah Fernandez -324 at Pinnacle.
| Side | Market | Best Line | Worst |
|---|---|---|---|
| Kamilla Rakhimova | Moneyline | LowVig.ag: +283 | +240 |
| Leylah Fernandez | Moneyline | Pinnacle: -324 | -380 |
| Kamilla Rakhimova +4.5 | Spread | Pinnacle: -110 | -120 |
| Leylah Fernandez -4.5 | Spread | LowVig.ag: -103 | -125 |
| Over 20.5 | Total | Pinnacle: -108 | -120 |
| Under 20.5 | Total | LowVig.ag: +100 | -125 |
| Kamilla Rakhimova +3.5 | Spread | Bally Bet: +133 | +133 |
| Leylah Fernandez -3.5 | Spread | Bally Bet: -180 | -180 |
Frequently Asked Questions
What are the best WTA China Open lines today?
The table below shows which sportsbook has the best available price on each side of every upcoming WTA China 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.