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How accurate are the Belgium - Pro League odds?

The closing prices of 1,656 finished games since Fri 23 Jul 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

1,656 games, 2 bookmakers
  • Closing favourite won 53% 883 of 1,656 games
  • Market Brier score 0.576 0 is perfect; a coin flip scores 0.667
  • Average closing payout 93.5% 100% minus the bookmakers' margin
  • Games covered 1,656 Fri 23 Jul 2021 to Sun 11 Oct 2026

26 of the 1,682 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 2.4% of 85 selections 10-20% chance: happened 13.0% of 629 selections 20-30% chance: happened 25.1% of 2,060 selections 30-40% chance: happened 33.2% of 823 selections 40-50% chance: happened 44.3% of 628 selections 50-60% chance: happened 59.5% of 388 selections 60-70% chance: happened 72.0% of 232 selections 70-80% chance: happened 85.7% of 105 selections 100% 0%
Market said 0%100%
Happened
Market chancePriceSelectionsMarket saidHappenedDiff
0-10% 10.00 or longer 85 8.1% 2.4% -5.7 pts
10-20% 5.00 to 10.00 629 16.2% 13.0% -3.2 pts
20-30% 3.33 to 5.00 2,060 25.6% 25.1% -0.5 pts
30-40% 2.50 to 3.33 823 34.5% 33.2% -1.3 pts
40-50% 2.00 to 2.50 628 44.6% 44.3% -0.3 pts
50-60% 1.67 to 2.00 388 54.9% 59.5% +4.6 pts
60-70% 1.43 to 1.67 232 64.2% 72.0% +7.8 pts
70-80% 1.25 to 1.43 105 74.5% 85.7% +11.2 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 43.1% 42.9% -0.2 pts
Draw 24.9% 24.6% -0.3 pts
Away win 32.0% 32.4% +0.4 pts

The market's average closing chance for each outcome over all 1,656 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
Unibet 1,357 0.574 -0.002 94.0%
Bet365 1,595 0.580 +0.004 93.2%

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 Belgium Pro League odds?
Across 1,656 finished Belgium Pro League games since 2021, the closing favourite won 53% of the time. The market's closing chance, with the bookmakers' margin removed, gave the home side 43.1% on average and home wins happened 42.9% 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 0.576 in this league; the lowest single bookmaker is Unibet at 0.574. 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 6.5% 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 Belgium - Pro League page, every game behind these figures in the Belgium - Pro League results and closing odds by season, or work out a price's implied chance and closing line value with the betting calculators.