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How accurate are the PDC World Championship odds?

The closing prices of 468 finished games since Wed 15 Dec 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

468 games, 2 bookmakers
  • Closing favourite won 71% 331 of 468 games
  • Market Brier score 0.381 0 is perfect; a coin flip scores 0.500
  • Average closing payout 95.6% 100% minus the bookmakers' margin
  • Games covered 468 Wed 15 Dec 2021 to Sat 3 Jan 2026

4 of the 472 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 5.9% of 51 selections 10-20% chance: happened 16.1% of 87 selections 20-30% chance: happened 26.7% of 116 selections 30-40% chance: happened 37.0% of 108 selections 40-50% chance: happened 45.5% of 101 selections 50-60% chance: happened 54.1% of 111 selections 60-70% chance: happened 63.0% of 108 selections 70-80% chance: happened 73.3% of 116 selections 80-90% chance: happened 83.9% of 87 selections 90-100% chance: happened 94.1% of 51 selections 100% 0%
Market said 0%100%
Happened
Market chancePriceSelectionsMarket saidHappenedDiff
0-10% 10.00 or longer 51 7.4% 5.9% -1.5 pts
10-20% 5.00 to 10.00 87 14.8% 16.1% +1.3 pts
20-30% 3.33 to 5.00 116 25.1% 26.7% +1.6 pts
30-40% 2.50 to 3.33 108 35.2% 37.0% +1.8 pts
40-50% 2.00 to 2.50 101 45.0% 45.5% +0.5 pts
50-60% 1.67 to 2.00 111 54.5% 54.1% -0.4 pts
60-70% 1.43 to 1.67 108 64.8% 63.0% -1.8 pts
70-80% 1.25 to 1.43 116 74.9% 73.3% -1.6 pts
80-90% 1.11 to 1.25 87 85.2% 83.9% -1.3 pts
90-100% 1.11 or shorter 51 92.6% 94.1% +1.5 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, away

OutcomeMarket saidHappenedDiff
Home win 65.3% 64.5% -0.8 pts
Away win 34.7% 35.5% +0.8 pts

The market's average closing chance for each outcome over all 468 games against the share of games it won. "Home" is the first-named side.

Bookmaker accuracy

lower is better
BookmakerGamesBrier scorevs market averagePayout
Unibet 431 0.374 -0.012 95.5%
Bet365 291 0.382 +0.025 95.1%

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 PDC World Championship odds?
Across 468 finished PDC World Championship games since 2021, the closing favourite won 71% of the time. The market's closing chance, with the bookmakers' margin removed, gave the home side 65.3% on average and home wins happened 64.5% 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 0.381 in this league; the lowest single bookmaker is Unibet at 0.374. 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. The bookmaker's margin, about 4.4% here, still has to be cleared: the closing line value calculator shows what a price needs to beat.