Totals betting in WTA Canadian Open matches revolves around the combined number of games played by both players in a match. A typical line might be set at 20.5 games, with bettors wagering on whether the match will go over or under that number. Unlike team sports where totals reflect combined scoring, tennis totals are driven by the competitiveness and length of a match — a straight-sets blowout trends under, while a three-set battle with multiple breaks and holds pushes the total higher. The surface matters here: the Canadian Open is played on hard courts, which tend to produce moderate-length rallies and can favor strong servers, often leading to tighter holds and slightly higher game counts than clay.
The totals market becomes most valuable when bettors identify mismatches the books haven't fully priced in — a dominant server facing a weak returner, for instance, or a match between two grinders likely to extend deep into sets. First-round matchups, where form disparities are greatest, often present the sharpest edges. Vig on WTA totals typically runs slightly higher than moneyline markets, as books have less liquidity and public action to balance. Comparing juice across sportsbooks is critical here, since even a few cents of vig difference on a -110 line compounds meaningfully over a full tournament's worth of wagers.
↑ 7-day trend: WTA Canadian Open totals average vig has worsened by 0.49 percentage points over the past week (from 5.75% to 6.24%). Odds margins are widening, meaning bettors are getting less value per wager.
Cross-Sport totals Vig Comparison
WTA Canadian Open totals averages 6.24% vig across 11 sportsbooks. Here's how that compares to other active sports:
| Sport | Avg Vig | vs WTA Canadian Open |
|---|---|---|
| WTA Canadian Open | 6.24% | — |
| CFL | 5.17% | 1.07% higher |
| NCAAF | 5.04% | 1.20% higher |
| NFL | 4.97% | 1.27% higher |
| NFL Preseason | 4.98% | 1.26% higher |
Vig Rankings
| # | Sportsbook | Vig | Grade | Events |
|---|---|---|---|---|
| 1 | LowVig.ag | 4.05% | B | 1 |
| 2 | BetOnline.ag | 4.05% | B | 1 |
| 3 | Pinnacle | 4.34% | B | 1 |
| 4 | betPARX | 6.41% | C | 1 |
| 5 | Bally Bet | 6.41% | C | 1 |
| 6 | Bovada | 6.78% | C | 1 |
| 7 | BetAnything | 6.78% | C | 1 |
| 8 | BetRivers | 6.81% | C | 1 |
| 9 | BetUS | 6.93% | C | 1 |
| 10 | ReBet | 7.74% | D | 1 |
| 11 | Caesars | 8.33% | D- | 1 |
Frequently Asked Questions
Which sportsbook has the lowest WTA Canadian Open totals vig?
LowVig.ag currently has the lowest vig at 4.05%, earning a grade of B.
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.