The Six Nations Championship, running annually from late January through mid-March, offers a compact but deeply strategic betting market. With only 15 matches across five weekends, each fixture carries enormous weight — there are no throwaway games. Rugby union's scoring structure, where tries, conversions, penalties, and drop goals create multiple pathways to a final score, makes spread and totals markets particularly interesting. The sport's physicality also means momentum can shift dramatically within a match, and bettors who understand how forward dominance translates to scoreboard pressure have a genuine edge. Market depth is solid for match outcomes, handicaps, and over/unders, though prop markets tend to be thinner than what you'd find for major domestic leagues like the Premiership or Top 14.
Vig on Six Nations markets varies meaningfully depending on the matchup. Marquee fixtures — England vs. France, Ireland vs. Scotland, or any match with championship implications on the final weekend — attract heavy public interest and sharp action, which tends to compress margins as books compete for volume. Conversely, matches perceived as mismatches, such as Italy's home games against top-tier opponents, often carry wider margins because books face less competitive pressure to sharpen their lines. Bettors comparing vig across sportsbooks will typically find the tightest margins on match handicaps for headline games and wider spreads on derivative markets like first tryscorer or exact score.
Several factors move Six Nations lines in ways that reward attentive bettors. Home advantage is statistically significant — teams playing in Cardiff, Dublin, or Paris historically outperform their neutral-site expectations, partly due to crowd intensity and travel logistics. Weather is a critical variable, especially at exposed venues like Murrayfield or the Stadio Olimpico, where wind and rain can suppress scoring and favor forward-oriented teams. Injury news, particularly to flyhalves and loosehead props, can shift handicap lines by multiple points. The final "Super Saturday," when all three matches are played on the same day with the championship potentially on the line, often produces the sharpest odds of the tournament as books and bettors alike bring maximum focus to those closing fixtures.
Six Nations Sportsbook Vig Rankings
| # | Sportsbook | Avg Vig | Grade | Moneyline | Spreads | Totals | Events |
|---|---|---|---|---|---|---|---|
| 1 | BetRivers | 9.72% | D- | — | — | 9.72% | 1 |
Frequently Asked Questions
Which sportsbook has the lowest vig for Six Nations?
BetRivers currently has the lowest average vig for Six Nations at 9.72%, earning a grade of D-.
Why do only 1 sportsbooks cover Six Nations?
Six Nations is a niche market compared to major sports like NFL or NBA. Fewer sportsbooks offer lines because betting volume is lower. The 1 book that do cover it is BetRivers.
Why is Six Nations vig so high?
Even the best book charges 9.72% vig for Six Nations. Higher vig typically reflects thinner markets with less betting volume, wider spreads due to less reliable data, or fewer competing sportsbooks driving down prices.
What is the Six Nations?
The Six Nations Championship is an annual rugby union tournament between England, France, Ireland, Italy, Scotland, and Wales. Played in February and March, it's one of the oldest and most prestigious rugby competitions. Betting volume is high during the tournament, keeping vig relatively competitive.
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.