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How accurate are the Saudi Arabia - Pro League odds?

The closing prices of 1,231 finished games since Thu 12 Aug 2021, set against what happened: the chance the market gave, with the bookmakers' margin removed, next to how often it came in. A record of what the market did, not a tip.

The market's record

1,231 games, 2 bookmakers
  • Closing favourite won 59% 728 of 1,231 games
  • Market Brier score 0.522 0 is perfect; a coin flip scores 0.667
  • Average closing payout 91.6% 100% minus the bookmakers' margin
  • Games covered 1,231 Thu 12 Aug 2021 to Sat 31 Oct 2026

194 of the 1,425 games finished in that time are left out: no bookmaker had a closing price on every outcome.

Market chance against what happened

0-10% chance: happened 3.3% of 245 selections 10-20% chance: happened 12.6% of 644 selections 20-30% chance: happened 24.5% of 1,263 selections 30-40% chance: happened 36.8% of 473 selections 40-50% chance: happened 43.2% of 345 selections 50-60% chance: happened 56.6% of 288 selections 60-70% chance: happened 70.8% of 171 selections 70-80% chance: happened 81.2% of 160 selections 80-90% chance: happened 91.0% of 89 selections 100% 0%
Market said 0%100%
Happened
Market chancePriceSelectionsMarket saidHappenedDiff
0-10% 10.00 or longer 245 6.8% 3.3% -3.5 pts
10-20% 5.00 to 10.00 644 15.4% 12.6% -2.8 pts
20-30% 3.33 to 5.00 1,263 25.3% 24.5% -0.8 pts
30-40% 2.50 to 3.33 473 34.4% 36.8% +2.4 pts
40-50% 2.00 to 2.50 345 44.8% 43.2% -1.6 pts
50-60% 1.67 to 2.00 288 55.2% 56.6% +1.4 pts
60-70% 1.43 to 1.67 171 64.7% 70.8% +6.1 pts
70-80% 1.25 to 1.43 160 75.0% 81.2% +6.2 pts
80-90% 1.11 to 1.25 89 84.0% 91.0% +7.0 pts

Every priced outcome of every game is one selection. "Market said" is the bookmakers' average implied probability with the margin removed; "Happened" is how often that outcome came in. On the diagonal the market was right on average; above it, that kind of result happened more often than the prices said. Bands with fewer than 30 selections are left out.

Home, draw and away

OutcomeMarket saidHappenedDiff
Home win 42.4% 43.9% +1.5 pts
Draw 22.8% 22.0% -0.8 pts
Away win 34.8% 34.1% -0.7 pts

The market's average closing chance for each outcome over all 1,231 games against the share of games it won, settled on the regular-time score. "Home" is the first-named side.

Bookmaker accuracy

lower is better
BookmakerGamesBrier scorevs market averagePayout
Bet365 639 0.514 +0.002 91.4%
Unibet 1,039 0.517 +0.001 91.9%

Each bookmaker's own closing prices, margin removed, scored against the results of the games it priced; "vs market average" compares it with the bookmakers' average on the same games, so a negative figure means its prices were the closer. Bookmakers with fewer than 50 priced games are left out. Differences of a few thousandths are noise; a much higher score usually means the bookmaker's last price was captured well before the start, so it is the price in our archive being scored, not the trader.

Odds accuracy FAQ

How accurate are Saudi Arabia Pro League odds?
Across 1,231 finished Saudi Arabia Pro League games since 2021, the closing favourite won 59% of the time. The market's closing chance, with the bookmakers' margin removed, gave the home side 42.4% on average and home wins happened 43.9% of the time. The bands above show the same comparison price by price: a well-calibrated market has outcomes happening about as often as its prices say.
What is a Brier score?
The squared distance between the chances a bookmaker's prices gave and what happened, averaged over games: 0 would be perfect foresight, and on a three-way market a coin-flip price scores 0.667. The market average's closing prices score 0.522 in this league; the lowest single bookmaker is Bet365 at 0.514. Differences of a few thousandths between bookmakers are noise, not skill.
Does a well-calibrated market mean the odds cannot be beaten?
Calibration says the market is right on average, not on every game. A band where outcomes happened more often than the prices said is where the closing market under-priced that kind of result over these seasons, which is often the draw or the outsider. The bookmaker's margin, about 8.4% here, still has to be cleared: the closing line value calculator shows what a price needs to beat.

See the league's fixtures, results and the favourites' recent record on the Saudi Arabia - Pro League page, every game behind these figures in the Saudi Arabia - Pro League results and closing odds by season, or work out a price's implied chance and closing line value with the betting calculators.