This market refers to the tennis match between Mariano Navone and Arthur Fils in the National Bank Open, originally scheduled for August 6, 2026 at 12:30PM ET. This market will resolve to 'Mariano Navone' if Mariano Navone advances against Arthur Fils. This market will resolve to 'Arthur Fils' if Arthur Fils advances against Mariano Navone. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, 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.