MELBOURNE, Australia — Joao Fonseca definitively introduced himself to the world as the latest teen sensation in men’s tennis, upsetting No. 9 seed Andrey Rublev 7-6 (1), 6-3, 7-6 (5) in the first ...
This story has been updated to reflect Joao Fonseca’s first-round win over Andrey Rublev at the Australian Open. What’s the right moment to hitch your hopes to an up-and-coming tennis player?