BERLIN, Sep. 16 (Xinhua) -- Germany staged a remarkable comeback against Australia to turn a 2-1 deficit into a 3-2 victory to retain a berth in the Davis Cup World Group in Hamburg, Germany on Sunday.

Florian Mayer cruised to a straight 6-4, 6-2, 6-3 victory over Bernard Tomic to make it two all.

Youngster Cedrik Marcel Stebe finally sealed the win for Germany with his surprising victory over Lleyton Hewitt in three straight sets 6-4, 6-1, 6-4.

Stebe, world No. 127, started with 0-3 deficit into the first set but remained unfazed to win against world No. 75.

"It is the biggest success of my career," Stebe said after the win.

Thus Germany ensured their berth at the World Group, Australia stay another year in Asia/Oceania Zone Group I.

"This victory calls for a celebration," Germany tennis team manager Patrick Kuehnen said.