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How accurate are the Greece - Basket League odds?

The closing prices of 791 finished games since Sat 2 Oct 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

791 games, 2 bookmakers
  • Closing favourite won 64% 503 of 791 games
  • Market Brier score 0.471 0 is perfect; a coin flip scores 0.500
  • Average closing payout 94.8% 100% minus the bookmakers' margin
  • Games covered 791 Sat 2 Oct 2021 to Sun 8 Nov 2026

110 of the 901 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 20.5% of 122 selections 10-20% chance: happened 31.5% of 130 selections 20-30% chance: happened 40.7% of 135 selections 30-40% chance: happened 38.5% of 174 selections 40-50% chance: happened 43.8% of 224 selections 50-60% chance: happened 55.9% of 236 selections 60-70% chance: happened 61.5% of 174 selections 70-80% chance: happened 58.8% of 136 selections 80-90% chance: happened 69.0% of 129 selections 90-100% chance: happened 79.5% of 122 selections 100% 0%
Market said 0%100%
Happened
Market chancePriceSelectionsMarket saidHappenedDiff
0-10% 10.00 or longer 122 7.3% 20.5% +13.2 pts
10-20% 5.00 to 10.00 130 14.6% 31.5% +16.9 pts
20-30% 3.33 to 5.00 135 25.3% 40.7% +15.4 pts
30-40% 2.50 to 3.33 174 35.5% 38.5% +3.0 pts
40-50% 2.00 to 2.50 224 45.2% 43.8% -1.4 pts
50-60% 1.67 to 2.00 236 54.5% 55.9% +1.4 pts
60-70% 1.43 to 1.67 174 64.5% 61.5% -3.0 pts
70-80% 1.25 to 1.43 136 74.8% 58.8% -16.0 pts
80-90% 1.11 to 1.25 129 85.5% 69.0% -16.5 pts
90-100% 1.11 or shorter 122 92.7% 79.5% -13.2 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, away

OutcomeMarket saidHappenedDiff
Home win 53.2% 61.9% +8.7 pts
Away win 46.8% 38.1% -8.7 pts

The market's average closing chance for each outcome over all 791 games against the share of games it won. "Home" is the first-named side.

Bookmaker accuracy

lower is better
BookmakerGamesBrier scorevs market averagePayout
Unibet 575 0.324 +0.002 94.0%
Bet365 386 0.645 +0.001 96.1%

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 Greece Basket League odds?
Across 791 finished Greece Basket League games since 2021, the closing favourite won 64% of the time. The market's closing chance, with the bookmakers' margin removed, gave the home side 53.2% on average and home wins happened 61.9% 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 0.471 in this league; the lowest single bookmaker is Unibet at 0.324. 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 5.2% here, still has to be cleared: the closing line value calculator shows what a price needs to beat.