Joao Fonseca’s blossoming career is winning new admirers. The Brazil teen prodigy made history following his second-round victory over Ugo Humbert at the 2025 Miami Open. Fonseca became the youngest tennis player, male or female, to reach one million followers on Instagram.<\/p>\n
This latest off-court milestone comes on the back of a breakout season<\/a> on the ATP Tour. Fonseca qualified for his first Grand Slam main draw at this year’s Australian Open and stunned Andrey Rublev<\/a> for a maiden Top 10 win.<\/p>\n Last month, the Rio native bagged his first ATP title on the clay courts of Buenos Aires. He saved match points in the quarterfinal during the tournament and defeated former Top 20 player Francisco Cerundolo in the final.<\/p>\n Fonseca’s rapid rise coincided with his soaring numbers on Instagram, which is one of the most used social media platforms in Brazil. By attaining the 1 million mark at 18 years and seven months, he eclipses Emma Raducanu, who previously held this record (at 18 years and 10 months) after her historic 2021 US Open title win<\/a>.<\/p>\n Two more players feature in this exclusive list. Carlos Alcaraz now becomes the third youngest (19 years) to have reached 1 million Instagram followers. The World No. 3 cracked this milestone at the 2022 Madrid Open after beating Rafael Nadal and Novak Djokovic en route to the title.<\/p>\n Joao Fonseca becomes the youngest tennis player to hit 1 MILLION Instagram followers!<\/p>\n 18 years 7 months – Joao Fonseca (Miami 2025) Starboy \ud83c\udde7\ud83c\uddf7 pic.twitter.com\/3DWw6F1HoP<\/a><\/p>\n — Bastien Fachan (@BastienFachan) March 24, 2025<\/a><\/p><\/blockquote>\n Joao Fonseca Surpasses Emma Raducanu as the youngest player to Reach 1 Million Instagram followers<\/h3>\n
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18 years 10 months – Emma Raducanu (US Open 2021)
19 years – Carlos Alcaraz (Madrid 2022)
19 years 6 months – Coco Gauff (US Open 2023)<\/p>\n