Profitable tennis bettor adding to position

This market refers to the tennis match between Martin Damm and Andrea Guerrieri in the European Open, Qualification, originally scheduled for October 18, 2026 at 10:00AM ET. This market will resolve to 'Martin Damm' if Martin Damm advances against Andrea Guerrieri. This market will resolve to 'Andrea Guerrieri' if Andrea Guerrieri advances against Martin Damm. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 1, 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.