This market refers to the tennis match between Janice Tjen and Dayana Yastremska in the Monterrey Open, originally scheduled for August 24, 2026 at 12:00PM ET.
This market will resolve to 'Janice Tjen' if Janice Tjen advances against Dayana Yastremska.
This market will resolve to 'Dayana Yastremska' if Dayana Yastremska advances against Janice Tjen.
If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 7, 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.
Monterrey Open: Janice Tjen vs Dayana Yastremska
Dayana Yastremska636⁵
Janice Tjen267Game context
Janice Tjen enters the Monterrey Open first round as the seventh seed and world No. 35, holding a clear edge over Dayana Yastremska due to superior recent ranking, hard-court results, and a 1-0 head-to-head lead that includes a straight-sets win in Dubai earlier in 2026. Tjen arrives off a third-round loss in Cincinnati but has posted stronger overall hard-court numbers this season despite a mixed 2026 record. Yastremska, a former top-20 player now ranked around No. 112 and entering on a wildcard, shows inconsistent form with limited success against top-50 opponents and a sub-.500 win rate in 2026. Both players have struggled for consistent momentum on the outdoor hard courts that define this WTA 500 event, though Tjen’s higher ranking and stylistic edge on the surface underpin the market’s implied probability favoring her advancement.
