When the calendar flips to January 2026, the stakes will already be rising in Australia — as the fourth edition of the United Cup prepares to take the opening spot on the tennis season. The mix of national pride, elite singles power, and doubles depth makes this relatively new event one to watch — even for the hardened tennis purist who might ordinarily reserve their eyes for the Grand Slams.

Powerhouses Lead the Charge at 2026 United Cup

Defending champions Team USA enter as the top seeds, led by world No. 3 Coco Gauff and No. 6 Taylor Fritz. The Americans, two-time winners, boast a roster rounded out by Mackenzie McDonald, Christian Harrison, Varvara Lepchenko, and doubles specialist Nicole Melichar-Martinez. They’ll aim to fend off challengers in their quest for a third title.

Poland

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