Sportsbook Odds Report: August 2026

Which sportsbook had the best odds most often in August 2026?

Best-price share is the share of the sides a venue quoted where its price was at or tied for the highest payout of every venue quoting that same side. Each venue is measured against its own coverage, so a book that prices fewer games is not penalised for the games it skipped. Sample size is listed for every row because the denominators differ.

Coverage is the share of every price recorded this month that came from that venue. It is the check on the share beside it: a high best-price share on low coverage means the venue won most of the few sides it chose to quote, not that it beat the market. With 21 venues recording prices, an even split would put each near 4.8%.

1. DraftKings: 63.3% of 888,880 sides quoted, over 31 days (16.8% coverage; worst price on 50.7%)
2. LowVig: 34.3% of 194,550 sides quoted, over 31 days (3.7% coverage; worst price on 4.0%)
3. Caesars: 33.5% of 640,686 sides quoted, over 31 days (12.1% coverage; worst price on 50.6%)
4. Novig (prediction market): 32.0% of 117,294 sides quoted, over 24 days (2.2% coverage; worst price on 17.7%)
5. Pinnacle: 27.9% of 196,138 sides quoted, over 31 days (3.7% coverage; worst price on 4.6%)
6. FanDuel: 23.9% of 325,434 sides quoted, over 31 days (6.2% coverage; worst price on 23.5%)
7. Hard Rock Bet: 22.5% of 296,518 sides quoted, over 31 days (5.6% coverage; worst price on 20.8%)
8. theScore Bet: 20.8% of 293,724 sides quoted, over 31 days (5.6% coverage; worst price on 22.6%)
9. Kalshi (prediction market): 20.1% of 128,880 sides quoted, over 31 days (2.4% coverage; worst price on 30.1%)
10. Polymarket (prediction market): 19.0% of 12,824 sides quoted, over 7 days (0.2% coverage; worst price on 21.1%)
11. Bally Bet: 18.8% of 287,826 sides quoted, over 31 days (5.4% coverage; worst price on 15.2%)
12. BetParx: 18.7% of 286,240 sides quoted, over 31 days (5.4% coverage; worst price on 15.1%)
13. Bovada: 17.7% of 257,442 sides quoted, over 31 days (4.9% coverage; worst price on 19.9%)
14. Fanatics: 15.7% of 174,570 sides quoted, over 31 days (3.3% coverage; worst price on 14.3%)
15. BetOnline: 15.1% of 214,846 sides quoted, over 31 days (4.1% coverage; worst price on 13.1%)
16. MyBookie: 13.9% of 227,384 sides quoted, over 31 days (4.3% coverage; worst price on 29.1%)
17. ProphetX (prediction market): 13.3% of 45,772 sides quoted, over 24 days (0.9% coverage; worst price on 10.0%)
18. BetMGM: 13.3% of 261,622 sides quoted, over 31 days (5.0% coverage; worst price on 22.6%)
19. Polymarket US (prediction market): 10.1% of 86,242 sides quoted, over 25 days (1.6% coverage; worst price on 20.1%)
20. BetRivers: 9.9% of 286,318 sides quoted, over 31 days (5.4% coverage; worst price on 29.2%)
21. Fliff: 0.6% of 61,692 sides quoted, over 31 days (1.2% coverage; worst price on 47.6%)

Do prediction markets beat sportsbooks on price?

August 2026, measured the same way on both sides. Each group's denominator is the sides its own members actually quoted, so this is not distorted by the exchanges covering fewer games.

Exchange prices in this comparison are fee-adjusted: Kalshi and Polymarket US include each venue's taker fee and ProphetX its commission on winning bets, so an exchange number is what a taker actually pays. We publish this comparison and not a "share of all best prices" figure, because best-price credit is shared among tied venues, which would hand the larger group an advantage that is an artefact of counting rather than of pricing.

Which book led each sport?

NCAAF

1,508,742 sides across 31 days. Leader: LowVig, at or tied for the best price on 46.1% of the 62,078 sides it quoted, which were 4.1% of this sport's recorded prices.

NFL

1,462,842 sides across 31 days. Leader: DraftKings, at or tied for the best price on 79.4% of the 551,796 sides it quoted, which were 37.7% of this sport's recorded prices.

MLB

529,160 sides across 31 days. Leader: Novig, at or tied for the best price on 57.3% of the 20,102 sides it quoted, which were 3.8% of this sport's recorded prices.

Tennis

358,050 sides across 31 days. Leader: Kalshi, at or tied for the best price on 100.0% of the 14,584 sides it quoted, which were 4.1% of this sport's recorded prices.

MLS

315,750 sides across 31 days. Leader: Pinnacle, at or tied for the best price on 51.3% of the 14,316 sides it quoted, which were 4.5% of this sport's recorded prices.

NHL

275,628 sides across 31 days. Leader: DraftKings, at or tied for the best price on 60.3% of the 66,214 sides it quoted, which were 24.0% of this sport's recorded prices.

UFC

188,324 sides across 31 days. Leader: Novig, at or tied for the best price on 32.1% of the 10,688 sides it quoted, which were 5.7% of this sport's recorded prices.

NBA

185,200 sides across 21 days. Leader: DraftKings, at or tied for the best price on 76.2% of the 63,340 sides it quoted, which were 34.2% of this sport's recorded prices.

WNBA

175,056 sides across 31 days. Leader: Novig, at or tied for the best price on 46.8% of the 8,682 sides it quoted, which were 5.0% of this sport's recorded prices.

EPL

74,974 sides across 8 days. Leader: Novig, at or tied for the best price on 52.2% of the 3,232 sides it quoted, which were 4.3% of this sport's recorded prices.

Serie A

59,714 sides across 8 days. Leader: Pinnacle, at or tied for the best price on 57.2% of the 6,018 sides it quoted, which were 10.1% of this sport's recorded prices.

La Liga

49,950 sides across 8 days. Leader: Pinnacle, at or tied for the best price on 55.5% of the 4,988 sides it quoted, which were 10.0% of this sport's recorded prices.

Bundesliga

49,436 sides across 8 days. Leader: Pinnacle, at or tied for the best price on 54.5% of the 3,338 sides it quoted, which were 6.8% of this sport's recorded prices.

Ligue 1

38,994 sides across 8 days. Leader: Pinnacle, at or tied for the best price on 61.4% of the 3,888 sides it quoted, which were 10.0% of this sport's recorded prices.

Champions League

13,062 sides across 3 days. Leader: Pinnacle, at or tied for the best price on 62.2% of the 1,872 sides it quoted, which were 14.3% of this sport's recorded prices.

What was the widest price gap of the month?

The largest single moneyline gap recorded in August 2026 was 12.8 percentage points of implied probability, on Richie Miranda at Manoel Sousa (UFC). BetOnline paid +222 on Richie Miranda, where Kalshi paid +128.

Drawn from 165,264 gap observations recorded in August 2026. This is a single recorded scan, not an average.

How is this measured, and what does it not measure?

On every scan we record each venue's price on both sides of every game, then count how often each venue was at or tied for the highest payout on a side it quoted. Ties credit every venue holding the top price, so a book that consistently matches the market's best is not scored as though it lost. The full arithmetic, including how prediction-market fees are applied before any comparison, is on the methodology page.

This is best-or-tied share of each venue's own quoted sides. It is not the matched-lines metric. Because the denominator is only the sides a venue chose to quote, this measure rewards selective quoting: a venue that prices a narrow slice of the market and skips the rest can post a high share without ever beating the field on a like-for-like bet. That is what the coverage column beside each figure is there to expose.

The stricter measure, and this site's single source of truth for who actually has the best prices, is matched lines: it keeps only the games where every venue in the comparison quoted the same market at the same line, and ranks who won the price on those. It discards far more data and is much harder to lead. On that measure the exchanges do not lead, and no book dominates. The live matched-lines view is on Book Comparison, and the reasoning is set out in the correction of July 26, 2026. Where the two measures disagree, matched lines is the one to believe.