Oshima came home fourth in the solo Rookie Racing entry on Sunday, marking his best result in a single-seater since his third-place finish at Autopolis in 2019.
Since joining the Rookie squad owned by Toyota chairman Akio Toyoda in 2020, Oshima has often featured towards the rear of the field, with just a handful of points of finishes to his credit in that time - and concluded the 2022 campaign with zero points.
