Today's Japanese word of the day is egui (エグい), which in a baseball context refers to a particularly "nasty" or "sick" pitch.
Hanshin sophomore Shintaro Fujinami's hardsplitter/sinker/shuuto is as about as egui as you'll find in NPB.
But you don't have to take my word for it. Check out these gifs that I've borrowed from 2ch:
150 km/h is about 93.2 mph, 147 km/h is 91.3 mph.