Jelena Ostapenko, the 2017 French Open champion, enters the 2026 tournament at Roland Garros as a significant underdog. The prediction market prices her title chances at just 1% YES odds, reflecting the deep field of competitors and prevailing expectations around top seeds and favorites. The 2026 Women's French Open takes place in late May through early June as a centerpiece event on the professional tennis calendar. At current odds of 1%, the market is factoring in Ostapenko's injury history, her recent performance against top-ranked opponents, and the overall strength of the women's field competing for the Grand Slam title. While her 2017 championship victory on clay demonstrates technical proficiency at Roland Garros, current market pricing suggests traders see limited probability of another title run this cycle. The market will resolve in early June 2026 upon completion of the Women's Singles final. Odds movement in coming weeks will likely track Ostapenko's performance in spring clay court tournaments, which typically preview French Open contenders. This prediction market captures the broad tennis trading interest surrounding one of the sport's four major championships.