Robin Frijns ended an extended FP1 session fastest in Tokyo on a wet-dry track after a heavy downpour before the session.
The Envision Racing driver set 1:20.865 in the closing stages of the session to end fastest.
Practice was stopped twice during the 30 minutes of running. Stoffel Vandoorne caused the first red flag after he came to a halt after eight minutes of running.
The second red flag happened five minutes before the end of the session as Sam Bird locked up on the wet section of the track at Turn 1. The Brit hit Sacha Fenestraz who was exiting the pits, and ended up losing his front wing.
Eight minutes were added to the session to ensure the teams received the half an hour of track time.
The session saw the majority of drivers lock up and run wide at Turn 1. The start-finish straight was the only wet part of the track
Edoardo Mortara ended the session second fastest for Mahidra Racing. The Swiss-Italian racer set a 1:21.140.
Maximilian Gunther was third fastest for Maserati. The German driver set a 1:21:142.
Reigning Champion Jake Dennis had a brush with the wall at Turn 15. The Andretti driver had a difficult session as he finished 21st.
Pascal Wehrelin and Antonio Feliz Da Costa ended the session in 4th and 5th for Porsche. Nick Cassidy was sixth for Jaguar, and he was ahead of his teammate Mitch Evans who was seventh.
Nick De Vries ended the session eighth for Mahindra. The Season seven champion rounded off a strong start for the Indian team in Tokyo. The Dutch driver was half a second off the pace set by Frijns.
Oliver Rowland was ninth fastest for Nissan in their home race, and Lucas Di Grassi rounded out the top ten for ABT Cupra in a very unrepresentative session for all the teams.
