: Each tie consists of one men's singles, one women's singles, and a mixed doubles match.

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

: Both players frequently represent their countries in the deciding mixed doubles rubber. In 2025, Świątek (paired with Casper Ruud) defeated Pegula (paired with Jack Draper) in a match tie-break at the US Open . Historical Performance Summary Tournament 2025 Bad Homburg Open Jessica Pegula 2023 Qatar Open Iga Świątek 2023 United Cup Semi-Final Jessica Pegula 2022 San Diego Open Semi-Final Iga Świątek 4-6, 6-2, 6-2 2022 US Open Quarter-Final Iga Świątek 6-3, 7-6(4)

: Relies on heavy topspin forehands and elite court coverage to dictate play. She aims to overwhelm opponents with power and control the tempo from the baseline.

: Known for her exceptional flat hitting and tactical consistency. She excels at taking the ball early on fast surfaces to rob Świątek of the time needed to set up her heavy groundstrokes. United Cup Team Impact

The contrast in styles between these two top-tier players often dictates the flow of their matches: