A moneyline bet on the WTA French Open is the most straightforward wager available: pick which player wins the match, regardless of the set score or margin. Unlike spread betting in team sports, there's no handicap applied — it's simply a matter of selecting the outright winner. In WTA tennis, where upsets occur with notable frequency, moneyline pricing can swing dramatically based on draw placement, surface form, and recent injury concerns. Clay-court specialists who may carry modest rankings often present value when facing higher-ranked players whose games are better suited to hard courts or grass.

Strategically, the WTA French Open moneyline market is most valuable in the early rounds, where pricing inefficiencies tend to be largest. Bettors should closely monitor how players have performed in recent clay-court lead-up events like Madrid and Rome, as form on the surface is a stronger predictor than ranking alone. Regarding vig, moneyline markets in WTA tennis typically carry slightly higher margins than game or set spreads, particularly in lopsided matchups where books price heavy favorites at steep juice. Comparing vig across sportsbooks on these lines can meaningfully impact long-term returns, especially when betting underdogs at plus-money prices where even small odds differences compound over a full tournament.

Analysis updated September 20, 2026. Odds data above refreshes hourly.

Moneyline Vig Rankings

#SportsbookVigGradeEvents
1 Pinnacle 2.69% A 1
2 DraftKings 4.23% B 1
3 betPARX 4.23% B 1
4 Bovada 4.25% B 1
5 Hard Rock Bet 4.44% B 1
6 MyBookie.ag 4.86% B 1
7 FanDuel 5.02% C+ 1
8 theScore Bet (ESPN Bet) 5.52% C+ 1
9 Fanatics 5.84% C+ 1
10 Bally Bet 6.05% C 1
11 BetMGM 6.59% C 1
12 888sport 6.67% C 1
13 Caesars 6.82% C 1
14 Fliff 8.83% D- 1

Frequently Asked Questions

What is a moneyline bet?

A moneyline bet is the simplest form of sports wagering — you're picking which team will win the game outright, with no point spread involved. The odds reflect each team's implied probability of winning. Favorites have negative odds (e.g., -150) and underdogs have positive odds (e.g., +130).

Why does moneyline vig vary by matchup?

Moneyline vig is lowest on evenly matched games and highest on lopsided matchups. When a heavy favorite is -500, the book needs a wide margin on the underdog side to balance risk. Close games near pick'em (-110/-110) will always have the tightest vig.

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.