Results

Australian Open 01/20 03:20 23 [32] Joao Fonseca v Eliot Spizzirri [85] 4-6,6-2,1-6,2-6
ATP Brisbane 01/05 01:00 25 Reilly Opelka v Joao Fonseca CANC
Others 12/09 01:30 - Carlos Alcaraz Garfia v Joao Fonseca 7-5,2-6,10-8
ATP Paris 10/29 20:20 25 [14] Karen Khachanov v Joao Fonseca [28] 6-1,3-6,6-3
ATP Paris 10/28 12:35 24 [24] Denis Shapovalov v Joao Fonseca [28] 7-5,4-6,3-6
ATP Basel 10/26 14:30 29 [18] Hiltzik/ Koepfer v Joao Fonseca [46] 3-6,4-6
ATP Basel 10/25 13:00 28 [46] Joao Fonseca v Jaume Munar [42] 7-6,7-5
ATP Basel 10/24 13:30 27 [46] Joao Fonseca v Denis Shapovalov [23] Retired
ATP Basel 10/23 10:00 26 Jakub Mensik v Joao Fonseca Walkover
ATP Basel 10/21 14:05 25 [33] Giovanni Mpetshi Perricard v Joao Fonseca [46] 6-7,3-6
ATP Brussels 10/14 18:20 25 [45] Joao Fonseca v Botic Van De Zandschulp [86] 5-7,6-7
Laver Cup 09/20 02:00 3 [25] Flavio Cobolli v Joao Fonseca [42] 4-6,3-6

João Franca Guimarães Fonseca (Portuguese pronunciation: [ʒuˈɐ̃w fõˈsekɐ]; born 21 August 2006) is a Brazilian professional tennis player. He has a career-high ATP singles ranking of world No. 24, achieved on 3 November 2025 and a best doubles ranking of No. 431, reached on 26 February 2024. He is the current No. 1 singles player from Brazil.

Fonseca has won two ATP Tour singles titles at the 2025 Argentina Open and 2025 Swiss Indoors, as well as the 2024 NextGen Finals.