The RB team is fielding an all-Japanese line-up in first free practice with Iwasa joining regular driver Yuki Tsunoda in the VCARB 01 in their home round.
RB has given Iwasa the first of two mandatory rookie FP1 slots for the year, with the 22-year-old among the roster of young driver prospects that also includes reserve driver Liam Lawson and F2 driver Isack Hadjar.
