PolymarketCloses · in 7 hoursPart of Celtics vs. Pistons →

Celtics vs. Pistons: O/U 221.5

Current price

51.5¢

Implied probability 51.5%
$3.3K total volume · YES/NO

7-day range 51.5–52.5¢

Low gotcha risk

Gotcha risk — resolution-rule assessment

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The resolution criteria are clear and straightforward: the market resolves based on whether the combined final score is 222 or higher, or lower than 222. While no specific official box score or data feed is explicitly named, final point totals in official NBA games are objective and universally recorded. The market also includes clear handling for potential schedule disruptions, remaining open if the game is postponed and resolving 50-50 only if the game is cancelled with no make-up game played.

Wording ambiguity
Low
Source discretion
Med
Timing risk
Low
Exceptional clauses
Low

Liquidity

Medium tradability

Moderate book at the daily check: a spread over 1¢, or less than $50K within 5¢ of the mid. Larger orders may move the price, so check the book before sizing.

Book depth $32.8K within 5¢ of mid
Price history range

Price history

Market price
51¢51.5¢52¢52.5¢53¢00:0105:3611:1116:46
51¢51.5¢52¢52.5¢53¢Oct 19Oct 19Oct 19Oct 19

Not enough price history for this range yet.

Why it moved

No big moves in the last 7 days.

Resolution rules

In the upcoming NBA game, scheduled for October 20 at 3:00 PM ET: This market will resolve to "Over" if the Celtics and Pistons combine to score 222 or more points in this game. If the combined total is less than 222, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50.

Rules history

Rules history is not displayed yet.

Market explained

This market measures the total combined points scored by the Boston Celtics and Detroit Pistons in their scheduled NBA game.

How it resolves

The market resolves to Over if the Celtics and Pistons combine to score 222 or more points in the game. The market resolves to Under if the combined total is less than 222 points. If the game is postponed, the market stays open until the game finishes. If the game is canceled entirely with no make-up game scheduled, the market resolves 50-50.

Key dates

  • Scheduled game start: — The NBA game between the Celtics and Pistons is scheduled to begin.

Resolution source

No resolution source is identified in this explainer.

AI-generated analysis · google/gemini-3.7-flash ·

Community forecast

Community forecasting arrives with the forecast tools.