This market refers on the tennis match between Adolfo Vallejo and Thiago Monteiro in the Chile Open, Qualification, scheduled for February 21 at 12:00PM ET. This market will resolve to 'Vallejo' if Adolfo Vallejo advances against Thiago Monteiro. This market will resolve to 'Monteiro' if Thiago Monteiro advances against Adolfo Vallejo. 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.