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.

João Fonseca has definitively introduced himself to the world as the latest teen sensation in men’s tennis by upsetting No. 9 seed Andrey Rublev 7-6 (1), 6-3, 7-6 (5) in the first round of the Australian Open.

After picking up three consecutive wins to qualify for the Australian Open, Joao Fonseca upset Andrey Rublev in the first round. Fonseca entered the match as the ATP World No. 112 and the heavy underdog.