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| Outcome | Chance | 24h | 1 week | Bid · Ask | 24h volume | Ends |
|---|---|---|---|---|---|---|
| US Open ATP: Matteo Arnaldi vs James Duckworth | 0% | −61 pts | — | — · <1¢ | — | ended |
| US Open ATP: Matteo Arnaldi vs James Duckworth Set Handicap +/-1.5 | 0% | −45 pts | — | — · <1¢ | — | ended |
| US Open ATP: Matteo Arnaldi vs James Duckworth Set Handicap +/-2.5 | 0% | −22 pts | — | — · 3¢ | — | ended |
| Completed Match | 100% | +50 pts | — | >99¢ · 100¢ (<1¢) | — | ended |
| US Open ATP: Matteo Arnaldi vs James Duckworth Set 1 Winner | 100% | +43 pts | — | >99¢ · 100¢ (<1¢) | — | ended |
| US Open ATP: Matteo Arnaldi vs James Duckworth Set 2 Winner | 0% | −56 pts | — | — · 1¢ | — | ended |
| US Open ATP: Matteo Arnaldi vs James Duckworth Match O/U 40.5 | 100% | +53 pts | — | 99¢ · 100¢ (1¢) | — | ended |
| US Open ATP: Matteo Arnaldi vs James Duckworth Set 1 O/U 8.5 | 100% | +34 pts | — | >99¢ · 100¢ (<1¢) | — | ended |
| US Open ATP: Matteo Arnaldi vs James Duckworth Set 2 O/U 8.5 | 100% | +50 pts | — | >99¢ · 100¢ (<1¢) | — | ended |
| US Open ATP: Matteo Arnaldi vs James Duckworth Total Sets: O/U 3.5 | 100% | +35 pts | — | >99¢ · 100¢ (<1¢) | — | ended |
| US Open ATP: Matteo Arnaldi vs James Duckworth Match O/U 36.5 | 100% | +34 pts | — | 80¢ · 100¢ (20¢) | — | ended |
| US Open ATP: Matteo Arnaldi vs James Duckworth Game Spread +/-0.5 | 0% | −74 pts | — | — · <1¢ | — | ended |
| US Open ATP: Matteo Arnaldi vs James Duckworth Set 1 O/U 9.5 | 100% | +44 pts | — | >99¢ · 100¢ (<1¢) | — | ended |
| US Open ATP: Matteo Arnaldi vs James Duckworth Set 3 Winner | 0% | −55 pts | — | — · <1¢ | — | ended |
| US Open ATP: Matteo Arnaldi vs James Duckworth Set 2 O/U 9.5 | 0% | −50 pts | — | — · 1¢ | — | ended |
| US Open ATP: Matteo Arnaldi vs James Duckworth Total Sets: O/U 4.5 | 0% | −29 pts | — | — · 1¢ | — | ended |
| US Open ATP: Matteo Arnaldi vs James Duckworth Match O/U 38.5 | 100% | +40 pts | — | 84¢ · 100¢ (16¢) | — | ended |
| US Open ATP: Matteo Arnaldi vs James Duckworth Set 1 O/U 10.5 | 100% | +61 pts | — | 99¢ · 100¢ (1¢) | — | ended |
| US Open ATP: Matteo Arnaldi vs James Duckworth Set 4 Winner | 0% | −50 pts | — | — · 1¢ | — | ended |
| US Open ATP: Matteo Arnaldi vs James Duckworth Set 2 O/U 10.5 | 0% | −50 pts | — | — · 1¢ | — | ended |
| US Open ATP: Matteo Arnaldi vs James Duckworth Set 3 O/U 8.5 | 0% | −50 pts | — | — · 1¢ | — | ended |
| US Open ATP: Matteo Arnaldi vs James Duckworth Set 3 O/U 9.5 | 0% | −50 pts | — | — · 1¢ | — | ended |
| US Open ATP: Matteo Arnaldi vs James Duckworth Set 3 O/U 10.5 | 0% | −50 pts | — | — · <1¢ | — | ended |
| US Open ATP: Matteo Arnaldi vs James Duckworth Set 4 O/U 8.5 | 100% | +41 pts | — | 81¢ · 100¢ (19¢) | — | ended |
| US Open ATP: Matteo Arnaldi vs James Duckworth Set 4 O/U 9.5 | 100% | +50 pts | — | 99¢ · 100¢ (1¢) | — | ended |
| US Open ATP: Matteo Arnaldi vs James Duckworth Set 4 O/U 10.5 | 100% | +50 pts | — | >99¢ · 100¢ (<1¢) | — | ended |
| When | Trader | Outcome | Bet | Size | P&L now | Insider |
|---|---|---|---|---|---|---|
| 53d | Valuable-Span-CasketNew account | US Open ATP: Matteo Arnaldi vs James Duckworth | SellJames Duckworth>99¢ | $1,120 | −$1 −0.1% | — |
| 53d |  Gamer-Girl | US Open ATP: Matteo Arnaldi vs James Duckworth | SellJames Duckworth>99¢ | $2,198 | −$2 −0.1% | — |
| 53d | MartelloneNando | US Open ATP: Matteo Arnaldi vs James Duckworth | SellJames Duckworth>99¢ | $5,175 | −$5 −0.1% | — |
| 53d | hihhe | US Open ATP: Matteo Arnaldi vs James Duckworth | SellJames Duckworth>99¢ | $1,988 | −$2 −0.1% | — |
| 53d |  eslividich | US Open ATP: Matteo Arnaldi vs James Duckworth | SellJames Duckworth>99¢ | $1,990 | −$2 −0.1% | — |
| 53d | eokho | US Open ATP: Matteo Arnaldi vs James Duckworth | SellJames Duckworth>99¢ | $5,015 | −$5 −0.1% | — |
| 53d | blinki2 fills | US Open ATP: Matteo Arnaldi vs James Duckworth | SellJames Duckworth93¢ → 100¢ | $5,405 | −$413 −7.6% | — |
| 53d | alexdave888 | US Open ATP: Matteo Arnaldi vs James Duckworth | SellJames Duckworth>99¢ | $19,980 | −$20 −0.1% | — |
| 53d | Reliable-Giggle | US Open ATP: Matteo Arnaldi vs James Duckworth | SellJames Duckworth>99¢ | $2,141 | −$2 −0.1% | — |
| 53d | devilbanker2 fills | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyMatteo Arnaldi46¢ → 0¢ | $5,607 | −$5,607 −100% | 6 |
| 53d | ferrariChampions2026 | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyJames Duckworth43¢ → 100¢ | $2,739 | +$3,633 +133% | 6 |
| 53d | IQdegen2 fills | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyMatteo Arnaldi42¢ → 0¢ | $20,134 | −$20,134 −100% | 6 |
| 53d | alexdave888 | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyJames Duckworth54¢ → 100¢ | $10,800 | +$9,200 +85% | 6 |
| 53d | Gamer-Girl | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyJames Duckworth59¢ → 100¢ | $1,298 | +$902 +69% | 6 |
| 53d | omnibus-076daa | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyJames Duckworth52¢ → 100¢ | $3,745 | +$3,457 +92% | 6 |
| 53d | HomeRunHazard2 fills | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyJames Duckworth64¢ → 100¢ | $6,193 | +$3,459 +56% | 6 |
| 53d | MartelloneNando | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyJames Duckworth66¢ → 100¢ | $3,419 | +$1,761 +52% | 6 |
| 53d | eokho | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyJames Duckworth44¢ → 100¢ | $2,209 | +$2,811 +127% | 6 |
| 53d | Substantial-Service4 fills | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyMatteo Arnaldi59¢ → 0¢ | $39,251 | −$39,251 −100% | 6 |
| 53d | sifonman2 fills | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyJames Duckworth42¢ → 100¢ | $5,361 | +$7,489 +140% | 6 |
| 53d |  RN1 | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyJames Duckworth40¢ → 100¢ | $1,836 | +$2,754 +150% | 6 |
| 53d | 11vsldfdsgfkjgos | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyMatteo Arnaldi60¢ → 0¢ | $65,022 | −$65,022 −100% | 6 |
| 53d | mermlok | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyJames Duckworth42¢ → 100¢ | $1,134 | +$1,566 +138% | 6 |
| 53d | ssj3 | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyMatteo Arnaldi58¢ → 0¢ | $50,000 | −$50,000 −100% | 6 |
| 53d | zegg1 | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyJames Duckworth47¢ → 100¢ | $1,466 | +$1,654 +113% | 6 |
| 53d | rewrewwrewrewrerwe | US Open ATP: Matteo Arnaldi vs James Duckworth | SellMatteo Arnaldi53¢ → 0¢ | $1,805 | +$1,805 +100% | — |
| 53d | HomeRunHazard2 fills | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyMatteo Arnaldi59¢ → 0¢ | $7,237 | −$7,237 −100% | 6 |
| 53d | Sinnerr | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyJames Duckworth68¢ → 100¢ | $2,142 | +$1,008 +47% | 6 |
| 53d | Flaznorp | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyJames Duckworth69¢ → 100¢ | $1,382 | +$621 +45% | 6 |
| 53d | NS13 | US Open ATP: Matteo Arnaldi vs James Duckworth | SellJames Duckworth70¢ → 100¢ | $13,534 | −$5,800 −43% | — |
| 53d | blinki | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyJames Duckworth75¢ → 100¢ | $1,480 | +$494 +33% | 6 |
| 53d | kkookkoo2 fills | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyMatteo Arnaldi33¢ → 0¢ | $9,932 | −$9,932 −100% | 6 |
| 53d | rewrewwrewrewrerwe | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyMatteo Arnaldi34¢ → 0¢ | $1,055 | −$1,055 −100% | 6 |
| 53d | metama91 | US Open ATP: Matteo Arnaldi vs James Duckworth | SellMatteo Arnaldi39¢ → 0¢ | $1,170 | +$1,170 +100% | — |
| 53d | Gourmet1 | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyJames Duckworth42¢ → 100¢ | $9,138 | +$12,618 +138% | 6 |
| 53d |  0x5fD2D9C60781D711721145Ff2b906aA63a18 | US Open ATP: Matteo Arnaldi vs James Duckworth | SellMatteo Arnaldi77¢ → 0¢ | $2,502 | +$2,502 +100% | — |
| 53d | NS132 fills | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyJames Duckworth21¢ → 100¢ | $5,235 | +$19,692 +376% | 6 |
| 53d | 0x5fD2D9C60781D711721145Ff2b906aA63a18 | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyMatteo Arnaldi82¢ → 0¢ | $2,500 | −$2,500 −100% | 5 |
| 53d | DAKWIN | US Open ATP: Matteo Arnaldi vs James Duckworth | SellMatteo Arnaldi74¢ → 0¢ | $5,209 | +$5,209 +100% | — |
| 53d |  one8tyfive | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyJames Duckworth40¢ → 100¢ | $4,000 | +$6,000 +150% | 6 |
| 53d | DAKWIN | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyMatteo Arnaldi49¢ → 0¢ | $3,443 | −$3,443 −100% | 6 |
| 53d |  Do-Not-Redeem | US Open ATP: Matteo Arnaldi vs James Duckworth | SellJames Duckworth38¢ → 100¢ | $1,071 | −$1,747 −163% | — |
| 53d | jtwyslljy | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyJames Duckworth39¢ → 100¢ | $1,560 | +$2,440 +156% | 6 |
| 53d | comon119 | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyMatteo Arnaldi61¢ → 0¢ | $2,440 | −$2,440 −100% | 6 |
| 55d | Gaditima | US Open ATP: Matteo Arnaldi vs James Duckworth | BuyMatteo Arnaldi62¢ → 0¢ | $1,240 | −$1,240 −100% | 4 |
This market refers to the tennis match between Matteo Arnaldi and James Duckworth in the US Open ATP, originally scheduled for August 30, 2026 at 11:00AM ET. This market will resolve to 'Matteo Arnaldi' if Matteo Arnaldi advances against James Duckworth. This market will resolve to 'James Duckworth' if James Duckworth 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 September 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.
Sources: Polymarket's Gamma API, its CLOB price history and its Data API, read every two minutes. Prices are each outcome's Yes price, which is the market's probability: 0¢ for US Open ATP: Matteo Arnaldi vs James Duckworth means the market gives it about 0%.