Overall Comparison
Bally Bet ✔ Lower Vig
Average vig · C
theScore Bet (ESPN Bet)
Average vig · D
Averages are unweighted across all sports each book prices. Books that post lines on many low-liquidity international leagues (e.g. BetMGM, Pinnacle) carry higher averages than their NFL/NBA pricing alone would suggest — compare per-sport rows for like-for-like.
7-day trend: Bally Bet has improved by 0.06% over the past week; theScore Bet (ESPN Bet) has worsened by 0.06%.
theScore Bet (ESPN Bet) wins on 15 of 20 sports. The biggest gap is in NCAAF FCS, where Bally Bet charges 2.44% less vig.
Vig Comparison by Sport
Both books post lines on 20 of the 74 sports we track.
| Sport | Bally Bet | theScore Bet (ESPN Bet) | Winner |
|---|---|---|---|
| CFL | 5.36% | 4.43% | theScore Bet (ESPN Bet) |
| NCAAF | 4.96% | 4.62% | theScore Bet (ESPN Bet) |
| NCAAF FCS | 5.01% | 7.45% | Bally Bet |
| NFL | 4.99% | 4.55% | theScore Bet (ESPN Bet) |
| KBO | 7.10% | 6.69% | theScore Bet (ESPN Bet) |
| NBA | 4.92% | 4.53% | theScore Bet (ESPN Bet) |
| NCAAB | 4.99% | 4.50% | theScore Bet (ESPN Bet) |
| WNBA | 4.76% | 4.65% | theScore Bet (ESPN Bet) |
| AHL | 7.96% | 6.23% | theScore Bet (ESPN Bet) |
| Liiga | 5.40% | 5.87% | Bally Bet |
| NHL | 5.04% | 4.81% | theScore Bet (ESPN Bet) |
| Championship | 7.48% | 8.08% | Bally Bet |
| EPL | 5.50% | 6.66% | Bally Bet |
| Ligue 1 - France | 6.81% | 6.34% | theScore Bet (ESPN Bet) |
| Bundesliga - Germany | 6.94% | 6.78% | theScore Bet (ESPN Bet) |
| Serie A - Italy | 6.93% | 6.85% | theScore Bet (ESPN Bet) |
| La Liga - Spain | 6.03% | 6.67% | Bally Bet |
| MLS | 6.89% | 6.76% | theScore Bet (ESPN Bet) |
| ATP Swiss Indoors Basel | 6.61% | 5.31% | theScore Bet (ESPN Bet) |
| ATP Vienna Open | 6.49% | 5.79% | theScore Bet (ESPN Bet) |
54 more sports where only one book (or neither) currently posts lines
Frequently Asked Questions
Is Bally Bet or theScore Bet (ESPN Bet) better for odds?
Bally Bet currently offers lower vig overall. Bally Bet averages 6.03% vig (C) while theScore Bet (ESPN Bet) averages 7.17% vig (D).
How does Bally Bet compare to theScore Bet (ESPN Bet) by sport?
We compare both books across 74 sports. The comparison covers vig percentages, grades, and which book offers better odds per sport.
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.