Head-to-Head

Overview

K. Boulter and Marta Kostyuk have met 2 times since 2024. The rivalry is level at 1–1. They've met once in a final. On hard, they're tied 1–1. Their first encounter was at the 2024 San Diego (F), won by K. Boulter. Most recently they met at the 2025 Us Open (R128), with Marta Kostyuk winning.