Watch Fonseca vs. Bublik on Challenger TV

Joao Fonseca will aim for more history Sunday at the Arizona Tennis Classic, where he could become the second-youngest player from South America — behind Juan Martin del Potro — to win three ATP Challenger Tour titles.

The 18-year-old will meet Alexander Bublik in the Phoenix Challenger 175 final not before 2 p.m. local time. Fans can tune into Challenger TV to stream all ATP Challenger Tour matches live and on demand at no cost.

Watch Joao Fonseca vs. Alexander Bublik (not before 2 p.m. local time)

Fonseca, No. 69 in the PIF ATP Live Rankings, would rise to a new career high Monday should he win the title. 

The champion at the 2024 Next Gen ATP Finals presented by PIF, the teenager opened the year with a title run at the Canberra Challenger, just two weeks removed from his Jeddah triumph. Fonseca earned his first tour-level title last month at the clay-court ATP 250 in Buenos Aires. He is aiming to become the first player to win an ATP 250, Challenger 175 and Challenger 125 trophy in the same season.

Fonseca would join Del Potro and Guillermo Coria as the only South American-born players to win a trio of Challenger titles aged 18 and under. The teenager would join elite company in becoming the fifth-youngest player to win multiple Challenger titles in a single season, since 2018: Carlos Alcaraz, Jannik Sinner, Felix Auger-Aliassime and Holger Rune.

Bublik enters Sunday's final with an undefeated 6-0 mark in Challenger finals. A title would make him just the fourth player in Challenger history to own a perfect record in his first seven final appearances.

Both players earned statement wins in Saturday's semi-finals. Fonseca ousted former No. 4 Kei Nishikori 6-3, 6-3, while Bublik spoiled Nuno Borges' quest for a three-peat at the Phoenix Country Club, claiming a 6-3, 6-4 victory.