Alexander Zverev gave Germany a commanding 2-0 lead over Hungary in the revamped Davis Cup on the opening day Friday.
The third-ranked Zverev, who has repeatedly criticized the event's format changes, eased past Peter Nagy 6-2, 6-2 to double Germany's advantage after Philipp Kohlschreiber rallied to beat Zsombor Piros 6-7 (6), 7-5, 6-4.
Serbia, Russia, Australia, Kazakhstan, and Italy were also on the brink of qualifying for the new finals tournament in November after taking 2-0 leads.
All 12 ties are being played over two days. The reverse singles are scheduled immediately after the doubles on Saturday.