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PolymarketResolvedCloses Aug 11, 2026Sports

National Bank Open: Frances Tiafoe vs Marin Cilic Predictions

Polymarket12 outcomesVolume $585K
1
National Bank Open: Frances Tiafoe vs Marin Cilic Set 2 Winner Most likely
100%
2
National Bank Open: Frances Tiafoe vs Marin Cilic
93%
3
National Bank Open: Frances Tiafoe vs Marin Cilic Match O/U 22.5
88%
4
National Bank Open: Frances Tiafoe vs Marin Cilic Match O/U 21.5
88%
5
National Bank Open: Frances Tiafoe vs Marin Cilic Match O/U 23.5
63%
6
National Bank Open: Frances Tiafoe vs Marin Cilic Total Sets: O/U 2.5
51%
+6 more outcomes

Will Frances Tiafoe Beat Marin Cilic at the 2026 National Bank Open?

The prediction market has priced the National Bank Open matchup between Frances Tiafoe and Marin Cilic, with multiple outcomes available for traders. The main match winner contract reflects the crowd's conviction in this ATP-level encounter. Bettors can trade on the overall result, individual set winners, and game totals across both sets, giving a granular view of how this match is expected to unfold.

What Market Prices Say About Tiafoe and Cilic's Performance

The market-implied probability for the match winner sits at 100%, according to Polymarket. Set 2 Winner carries 100% implied odds, while Set 1 Winner is priced at 100%. Game totals show interesting splits: the Match O/U 22.5 is 100%, Set 1 O/U 9.5 sits at 100%, and both Set 1 O/U 8.5 and Set 2 O/U 8.5 are each 100%. These prices suggest traders expect a competitive affair, with set-level odds relatively balanced and game totals reflecting moderate-length sets.

What Could Shift These National Bank Open Odds

Movement in individual set markets typically drives repricing of the match winner contract. Early performance in Set 1 could trigger rapid adjustments to Set 2 and Match O/U odds. Injury news, court conditions, or player form updates closer to the Aug 11, 2026 close date would likely reset the board. Trading volume and liquidity shifts between match winner and set props often signal where informed traders are positioning themselves.

QuestionNational Bank Open: Frances Tiafoe vs Marin Cilic
TypeMulti-outcome
Total volume$585K
ClosesAug 11, 2026
MarketPolymarket · trade on Polymarket →