Joao Fonseca definitively introduced himself to the world as the latest teen sensation in men’s tennis, upsetting No. 9 seed Andrey Rublev in the first round of the Australian Open.

Joao Fonseca is the talk of tennis after his incredible win against Andrey Rublev on his Grand Slam debut at the Australian Open – and it has edged him towards one of the first big rankings targets of his career.

At just 18, João Fonseca is putting the tennis world on notice, as illustrated by his clinical straight-sets victory over ninth seed Andrey Rublev at the Australian Open.