noun
whiz
WIZ/wˈɪz/
A person who is exceptionally skilled at something.
The juggler is a whiz at keeping several balls in the air.
Etymology
The skilled-person sense probably developed from “something remarkable,” an extension of sound-imitating whizz. Alternatively, it may be a shortened, altered form of wizard, whose earlier meanings included a sage or wise person.
In context
a nine year old Belgian whiz kid shows all the same promise that Michael once did he too possesses exceptional talents that he has channeled into academic pursuits