USA dropped out of the Fed Cup World Group for the first time following a 3-0 defeat to Germany.
Americans fall to World Group II for first time in tournament's 48-year history
USA dropped out of the Fed Cup World Group for the first time in the history of the competition following defeat to Germany on Sunday.
Andrea Petkovic's 6-2 6-3 victory over American Melanie Oudin sealed the 17-time winners' fate, as Germany cruised into an unassailable a 3-0 lead.
The 23-year-old needed only one hour 18 minutes to beat her teenage opponent, adding to her 6-3 6-4 defeat of Christina McHale on Saturday.
After reaching the last two Fed Cup finals, USA brought an inexperienced squad to Stuttgart this time around, and they paid the price having now been ousted to World Group II.
Serena and Venus Williams have not taken part in their plunge, with world number 41 Bethanie Mattek-Sands also absent.
Germany now return to the top eight nations at USA's expense.
For Petkovic, though, her latest win represents a sixth consecutive victory in the tournament, having won both singles in Germany's 4-1 World Group II victory over Slovenia in February.
Inexperience
The German number one is ranked 19 in the world, a career high, and was rarely threatened by Oudin who, at just 19 years old, showed inexperience in crumbling to defeat.
"I never won a clinching match before," Petkovic said. "I believe that Germany belongs to the top group and I am really pleased that I won the point.
"I am very relieved," she added. "It may have looked easy but it wasn't a given."
Oudin admits she felt the pressure, knowing defeat would relegate her nation, but she was not helped by her unfamiliarity with red clay.
"I tried not to think about it but it was extra weight on my shoulders," said the American.
"I definitely started well but, after I lost my serve the first time, she took her game to another level. Also, it's my first week on red clay while she grew up on it."
The Germans later completed a whitewash in the tie - Sabine Lisicki defeating McHale 6-3 6-4 while in the closing doubles, Julia Georges and Anna-Lena Groenefeld beat Liezel Huber and Vania King 3-6 6-3 6-1.
