: Each tie consists of one men's singles, one women's singles, and a mixed doubles match.
As of April 2026, the two have established one of the most competitive rivalries on the WTA Tour: : Świątek leads the series 6–5.
The rivalry between and Jessica Pegula at the United Cup is defined by high-stakes encounters, including a dominant straight-sets victory for Pegula in 2023. While Świątek has historically led their overall head-to-head, Pegula has proven to be a formidable opponent on the fast hard courts typically found in the Australian summer. Head-to-Head Context