Nakajima Racing driver Yamamoto executed the 37-lap race to perfection after the heavens opened just minutes prior to the start, keeping Fenestraz at bay throughout and surviving a late safety car restart en route to the ninth win of his career.
As well as ending a two-year winless run for three-time champion Yamamoto, it also marks the first victory for Satoru Nakajima's eponymous team in two years.
