Daniel Brands defeated Roberto Bautista Agut 7-6 (5), 6-4 to wrap up a 4-1 win for Germany over Spain in their Davis Cup World Group first round tie on Sunday.
Despite Germany reaching the quarterfinals for the first time in three years, however, home supporters were angered by the no-show of three German players for the other reverse singles match with the result already decided.
Tommy Haas and Philipp Kohlschreiber won their doubles match Saturday for an unassailable 3-0 lead, after Kohlschreiber and Florian Mayer had won their singles on Friday.
The Spaniards were awarded a walkover in the fourth rubber when Kohlschreiber pulled out against Spanish No. 1 Feliciano Lopez, with Mayer and Haas also unavailable.
''All three of us have knocks and are exhausted and we cannot play,'' the 35-year-old Haas said. ''I think it's time to change a few rules in the Davis Cup,'' he added, referring to matches when the result is already decided.