Emma Raducanu will carry Great Britain's hopes at the United Cup in Australia, now the team's highest-ranked singles player following Jack Draper's withdrawal, with several other key members also missing from the original squad.
Naomi Osaka has opted for a fresh start to the 2026 season, choosing to open her campaign at the United Cup rather than returning to the WTA 250 event she had initially planned to enter.
Team Germany staged a superb comeback to defeat Poland in the final of the United Cup in Sydney on Sunday.
Defending Australian Open champion Novak Djokovic does not expect to be hampered by a wrist issue at 2024's opening Grand Slam.
Novak Djokovic successfully negotiated his first match of 2024 at the United Cup in Perth but had to overcome an injury scare midway through the match.