Philipp Kohlschreiber of Germany will face Carlos Berlocq of Argentina on Friday in the opening match of the first round of the Davis Cup.
In the second match of the best-of-five series, Florian Mayer of Germany will play Juan Monaco of Argentina on an outdoor clay court.
Doubles are set for Saturday with reverse singles on Sunday.
The series is evenly matched, partly because Argentina is playing without top player Juan Martin del Potro, who chose not to play.
Argentina has David Nalbandian and Horacio Zeballos also available, and Germany has Tobias Kamke and Christopher Kas.
Soaring temperatures are expected to reach about 34 degrees C (95 degrees F) on Friday with rain also forecast. Saturday and Sunday are expected to be cooler.
Argentina defeated Germany if the first round of last year's Davis Cup. The South Americans have reached the quarterfinals 11 straight times.