Japan By Charlotte AdamsJanuary 2, 2026Tsitsipas Shines in Greece’s Thrilling 6-3, 6-4 Win Over Japan at United Cup Opener Stefanos Tsitsipas dominated the court with a commanding 6-3, 6-4 victory over Yosuke Mochizuki, igniting Greece’s charge and securing an early lead against Japan in their electrifying United Cup opener, according to Greek City Times