Mercedes have dominated the only practice session for the Eifel Formula One Grand Prix, with Valtteri Bottas ahead of championship leader Lewis Hamilton, and Ferrari also impressing.
Bottas clocked 1 minute 26.225 seconds on the 5.148km Nuerburgring course under cloudy skies and cool temperatures.
Hamilton was .136 of a second back, with Ferrari's Charles Leclerc third and Sebastian Vettel fifth, behind Max Verstappen of Red Bull.
Daniel Ricciardo was eighth-quickest in his Renault, with a time of 1:27.392.
Drivers and teams had only one session to get the cars ready for qualifying later Saturday and the race on Sunday after Friday practice was scrapped as rain and mist prevented the medical helicopter from being able to fly, which meant cars were not allowed to take to the Nuerburgring track for safety reasons.
Hamilton will aim to equal Michael Schumacher's record 91 grand prix victories at the course where one section, the Schumacher-S, is named after the German great.
The bad weather prevented Schumacher's son, Mick, from making his Formula One practice debut.
Schumacher junior, the Formula Two championship leader, had been due to replace Italian Antonio Giovinazzi at Alfa Romeo for the morning-session only.
"Obviously I would have loved to get out and drive," said the 21-year-old. "Nevertheless, I think it's great to be here, to get the opportunity to work with the engineers and also to see the fans.
"I'm also very sorry for the fans that they don't get to see us drive ... we don't know what the future holds but hopefully I will get to drive a few laps again."
Racing Point's Lance Stroll missed practice because he did not "feel 100 per cent", according to the team.
He will be replaced by Nico Huelkenberg. The German driver deputised for the team at the two Silverstone races when Sergio Perez was sidelined after contracting the coronavirus.