Key Takeaways
- Marta Kostyuk faces world doubles No. 2 Taylor Townsend in the Guadalajara Open second round after officially debuting as the world No. 10.
- Townsend overcame a first-set shutout in the tiebreak to eliminate Tatjana Maria 6-7 (0), 6-3, 6-2 on the Mexcorevy.com court.
- Sloane Stephens snapped a two-tournament run of opening-round defeats by overcoming French qualifier Carole Monnet 6-4, 7-6 (5).
A major tactical test for Ukraine’s new top-ten star
Marta Kostyuk enters the Guadalajara Open presented by Santander carrying the prestige and pressure of a major career milestone, having officially debuted as the world No. 10. Rather than easing into her status as the tournament’s leading favorite, the Ukrainian faces an immediate tactical puzzle in the second round against Taylor Townsend. The encounter serves as a stern examination of whether Kostyuk can safeguard her second serve and lock down her passing lanes against one of the game’s most proactive forward-moving players.
Townsend earned her place in the second round after engineering a physically demanding comeback on the Mexcorevy.com court. The American, currently ranked No. 98 in singles and No. 2 in doubles, defeated 39-year-old German veteran Tatjana Maria 6-7 (0), 6-3, 6-2. Townsend rebounded from a lopsided opening tiebreak by dictating tempo, breaking serve in the seventh and ninth games of the second set before sweeping the final four games of the decider to seal the win.
Protecting passing lanes against elite forward craft
While Kostyuk holds a pristine 2-0 record in their head-to-head history, Townsend’s world-class doubles background provides a unique style of disruption. Townsend’s readiness to crowd the net and cut off angles demands immediate precision from the baseline. For Kostyuk, maintaining depth and preventing short balls will be essential; any tentative delivery will allow Townsend to step inside the baseline and apply relentless net pressure.
Townsend’s progression added to a successful round for American competitors in Mexico. Former world No. 3 and 2017 US Open champion Sloane Stephens also secured her passage, snapping a streak of opening-round exits at the tournament with a 6-4, 7-6 (5) victory over French qualifier Carole Monnet. The 33-year-old Stephens, now ranked No. 169, overturned deficits in both the second set and the tiebreak to set up a meeting with fifth-seeded Indonesian Janice Tjen.
Results summary from the Guadalajara Open
| Event | Winner | Opponent | Score |
|---|---|---|---|
| Singles First Round | Sloane Stephens | Carole Monnet | 6-4, 7-6 (5) |
| Singles First Round | Taylor Townsend | Tatjana Maria | 6-7 (0), 6-3, 6-2 |
| Doubles First Round | Yvonne Cavalle-Reimers / Lara Salden | Panna Udvardy / Emiliana Arango | 6-2, 6-4 |
The doubles action also saw Yvonne Cavalle-Reimers and Lara Salden defeat Emiliana Arango and Panna Udvardy in straight sets. Arango had already exited the singles draw against Peyton Stearns. Yet all eyes now turn to Kostyuk, whose top-ten arrival meets an uncompromising stylistic challenge against Townsend’s attacking instincts.
WTA Guadalajara - Marta Kostyuk's projected path
Marta Kostyuk in 2026
Currently ranked no.10 (career-high), Kostyuk played her last match on the 6th of September when she was defeated by world no.6 Linda Noskova 7-5 5-7 6-4 in the 4th round of the U.S. Open (draw).
This season Kostyuk has achieved an overall 36-9 win-loss record. The Ukrainian conquered 2 titles in 2026 in Rouen and Madrid.
