Serial trader scaling into Kayla Day

This market refers to the tennis match between Elvina Kalieva and Kayla Day in the Guadalajara Open Akron, originally scheduled for September 13, 2026 at 12:00PM ET. This market will resolve to 'Elvina Kalieva' if Elvina Kalieva advances against Kayla Day. This market will resolve to 'Kayla Day' if Kayla Day advances against Elvina Kalieva. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 27, 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 WTA Tour. A consensus of credible reporting may also be used.