The Six Nations Championship, running annually from late January through mid-March, offers a compact but deeply strategic betting landscape across its 15 matches. Rugby union's scoring structure — with tries, conversions, penalties, and drop goals creating multiple pathways to points — generates a rich variety of markets beyond simple match results. Handicap lines, total points, first tryscorer, and individual player props all attract significant volume. The tournament's round-robin format, where every match carries championship implications, means motivation is rarely in question, and the intensity of test-match rugby produces tighter contests than many bettors accustom themselves to in club competitions.
Vig on Six Nations markets tends to sit in a moderate range, with match-result margins typically between 4% and 7% at major sportsbooks. Because the tournament draws heavy public interest — particularly in the UK, Ireland, and France — bookmakers compete aggressively for customers, which can compress margins on headline markets like match winner and handicap. However, peripheral markets such as correct score, half-time/full-time, and niche props often carry wider margins, sometimes exceeding 8-10%. The best value tends to appear early in the week when lines first drop, as books sharpen their numbers closer to kickoff in response to market action and information flow.
Several factors consistently move Six Nations lines. Home advantage is substantial — historically worth roughly 4-6 points on the spread — with venues like the Stade de France, Twickenham, and the Aviva Stadium creating genuinely hostile environments. Weather plays a pronounced role, particularly at open-air grounds in February; rain and wind suppress scoring and favor forward-dominant teams, significantly shifting totals markets. Injury to key playmakers — a starting fly-half or a dominant loosehead prop — can move handicap lines by multiple points. Bettors should also track squad rotations during the middle rounds, where coaches sometimes rest players ahead of decisive final-weekend fixtures, creating mismatches that the market can be slow to price in.
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.