PolymarketOpen

Japan Open Tennis Championships: Matteo Arnaldi vs Rei Sakamoto

Rei Sakamoto55%
Matteo Arnaldi46%

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24h volume$2.2K
7d volume$2.2K
30d volume$2.2K
Liquidity$41.8K
Spread1%
ResolvesOct 7, 2026in 7 days

Probability history

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Shaded periods have no successful hourly price check.

Probability history0%25%50%75%100%Sep 28, 10:11 AMSep 28, 09:48 PMSep 29, 09:26 AMSep 29, 09:03 PMShaded periods have no successful hourly price check.Shaded periods have no successful hourly price check.

Based on this market’s outcome prices, expressed as probabilities.

Resolution rules

This market refers to the tennis match between Matteo Arnaldi and Rei Sakamoto in the Japan Open Tennis Championships, originally scheduled for September 29, 2026 at 9:00PM ET. This market will resolve to 'Matteo Arnaldi' if Matteo Arnaldi advances against Rei Sakamoto. This market will resolve to 'Rei Sakamoto' if Rei Sakamoto advances against Matteo Arnaldi. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 13, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the ATP Tour. A consensus of credible reporting may also be used.

Sourcehttps://www.atptour.com/en/scores/current

Other legs of this event

MarketVenuePriceStatus
Japan Open Tennis Championships: Completed Match: Matteo Arnaldi vs Rei SakamotoPolymarket52% YesOpen
Set 1 Winner: Matteo Arnaldi vs Rei SakamotoPolymarket53% Rei SakamotoOpen
Arnaldi vs. Sakamoto: Set 2 Games O/U 8.5Polymarket51% UnderOpen
Arnaldi vs. Sakamoto: Set 1 Games O/U 9.5Polymarket57% OverOpen
Game Spread: Rei Sakamoto (-0.5) vs Matteo Arnaldi (+0.5)Polymarket52% Rei SakamotoOpen
Arnaldi vs. Sakamoto: Set 2 Games O/U 9.5Polymarket51% UnderOpen
Matteo Arnaldi vs. Rei Sakamoto: Total Sets O/U 2.5Polymarket59% Under 2.5Open
Arnaldi vs. Sakamoto: Set 2 Games O/U 10.5Polymarket51% UnderOpen
Arnaldi vs. Sakamoto: Set 1 Games O/U 10.5Polymarket68% UnderOpen
Arnaldi vs. Sakamoto: Set 1 Games O/U 8.5Polymarket82% OverOpen
Arnaldi vs. Sakamoto: Match O/U 21.5Polymarket60% OverOpen
Arnaldi vs. Sakamoto: Match O/U 22.5Polymarket53% OverOpen
Set Handicap: Rei Sakamoto (-1.5) vs Matteo Arnaldi (+1.5)Polymarket67% Matteo ArnaldiOpen
Set 2 Winner: Matteo Arnaldi vs Rei SakamotoPolymarket54% Rei SakamotoOpen
Arnaldi vs. Sakamoto: Match O/U 23.5Polymarket55% UnderOpen

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As of Sep 29, 09:32 PM UTC