National Bank Open: Tallon Griekspoor vs Matteo Arnaldi Set 1 O/U 8.5 leads at 71%. Moderate consensus — room for value on contrarian bets.
| # | Outcome | Probability | If Right | Volume |
|---|---|---|---|---|
| 1 | National Bank Open: Tallon Griekspoor vs Matteo Arnaldi Set 1 O/U 8.5 | 71% | +41% | - |
| 2 | National Bank Open: Tallon Griekspoor vs Matteo Arnaldi Match O/U 21.5 | 63% | +59% | - |
| 3 | National Bank Open: Tallon Griekspoor vs Matteo Arnaldi | 60% | +65% | $46K |
| 4 | National Bank Open: Tallon Griekspoor vs Matteo Arnaldi Set 1 Winner | 56% | +77% | - |
| 5 | National Bank Open: Tallon Griekspoor vs Matteo Arnaldi Set 2 Winner | 55% | +82% | - |
| 6 | National Bank Open: Tallon Griekspoor vs Matteo Arnaldi Match O/U 22.5 | 54% | +87% | $9 |
| 7 | National Bank Open: Tallon Griekspoor vs Matteo Arnaldi Set 1 O/U 9.5 | 51% | +96% | - |
| 8 | National Bank Open: Tallon Griekspoor vs Matteo Arnaldi Set 2 O/U 8.5 | 50% | +98% | - |
| 9 | National Bank Open: Tallon Griekspoor vs Matteo Arnaldi Set 2 O/U 9.5 | 50% | +98% | - |
| 10 | National Bank Open: Tallon Griekspoor vs Matteo Arnaldi Set 2 O/U 10.5 | 50% | +98% | - |
| 11 | Completed Match | 50% | +100% | - |
| 12 | National Bank Open: Tallon Griekspoor vs Matteo Arnaldi Match O/U 23.5 | 47% | +113% | - |
| 13 | National Bank Open: Tallon Griekspoor vs Matteo Arnaldi Total Sets: O/U 2.5 | 42% | +135% | $10 |
| 14 | National Bank Open: Tallon Griekspoor vs Matteo Arnaldi Set 1 O/U 10.5 | 40% | +153% | $1 |
| 15 | National Bank Open: Tallon Griekspoor vs Matteo Arnaldi Set Handicap +/-1.5 | 36% | +182% | $15 |
| 16 | National Bank Open: Tallon Griekspoor vs Matteo Arnaldi Set Handicap +/-1.5 BEST VALUE | 24% | +326% | $17 |
Real-money prediction market · Trade with confidence
This market refers to the tennis match between Tallon Griekspoor and Matteo Arnaldi in the National Bank Open, originally scheduled for August 7, 2026 at 10:00AM ET. This market will resolve to 'Tall...
This prediction market tracks whether National Bank Open: Tallon Griekspoor vs Matteo Arnaldi will occur, with $46K in total trading volume reflecting significant trader interest. Prediction markets aggregate the collective intelligence of participants who stake real money on outcomes, making them one of the most reliable forecasting tools available for events driven by team performance data, historical matchups, and real-time injury reports.
Traders lean toward National Bank Open: Tallon Griekspoor vs Matteo Arnaldi Set 1 O/U 8.5 at 71%, suggesting a probable but not certain outcome. This moderate confidence level often reflects genuine uncertainty — markets at this range tend to see the most price movement as new information emerges.
Trading activity is exceptionally high, with $46K traded in the last 24 hours alone (100% of total volume). This surge often indicates breaking news, a key deadline approaching, or a significant shift in market sentiment.
This market is scheduled to resolve by 2026-08-14. As the resolution date approaches, expect increased trading activity and tighter probability estimates. Historical data shows that prediction market accuracy improves significantly in the final days before resolution.
As of Aug 07, 2026 at 04:55 UTC, the leading outcome is National Bank Open: Tallon Griekspoor vs Matteo Arnaldi Set 1 O/U 8.5 at 71% probability, with $46K in total trading volume on Polymarket.
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