Marta Kostyuk enters the WTA Rouen semi-finals as the world number 28 from Ukraine, holding a significant ranking advantage over her opponent. The Ukrainian player has shown strong form on the indoor clay court, winning three of her last five matches including victories over Magdalena Linette and Diane Parry. Kostyuk's only recent defeat came against Elena Rybakina, and she faces Tatjana Maria with no head-to-head history between the two players. Pinnacle has priced Kostyuk as a heavy favourite at 1.07 decimal odds.

Tatjana Maria of Germany arrives at the Rouen semi-finals ranked 63rd on the WTA Tour, seeking to upset the higher-seeded Marta Kostyuk on indoor clay. Maria has won two of her last five matches, including a straight-sets victory over Daria Salkova in the previous round, though she suffered defeats to Sloane Stephens and Karolina Kawa. The German player will be competing in her first career head-to-head meeting with Kostyuk at this event. Pinnacle's odds of 10.55 decimal reflect Maria's underdog status in the semi-final matchup.