Nikolay Davydenko was to face Philipp Kohlschreiber in the second singles on clay at the Olympic indoor stadium.
Russia won its second Davis Cup title last season over Argentina.
Germany hasn't beaten Russia since 1993, when it won its fourth Davis Cup title. The Germans reached the semifinals the next two years, but lost to Russia both times. The Russians again beat Germany in the first round in 1999.
In June, the Baltic States will hold BALTOPS and Saber Strike 2018 drills. A US Armored Brigade will be deployed in Europe for the purpose - no less than 4,000 soldiers
The import of liquefied natural gas from the United States will not grow, even if Germany exits the Nord Stream-2 project, German Minister of Economy and Energy Peter Altmeier said