Profitable serial trader adds to large position

This market refers to the doubles tennis match between King/Nakashima and Arribage/Olivetti in the Japan Open Tennis Championships, originally scheduled for September 30, 2026 at 9:00PM ET. This market will resolve to 'King/Nakashima' if the team of King/Nakashima advances against Arribage/Olivetti. This market will resolve to 'Arribage/Olivetti' if the team of Arribage/Olivetti advances against King/Nakashima. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 14, 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 team advances due to the opponent's retirement, default, or disqualification, this market will resolve to the team who advances. If the match ends in a walkover (a team 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.