Answer
Elise Mertens was Hsieh Su-wei's partner in their 2021 Wimbledon doubles victory. The duo defeated the pair of Veronika Kudermetova and Elena Vesnina in the final, marking Hsieh's third Grand Slam doubles title and Mertens' second. Their triumph showcased their exceptional teamwork and on-court chemistry, as they navigated the tournament with impressive consistency and determination.