The 18-year-old Fonseca, the youngest player in the eight-man field, made light of his lowly 145 world ranking to defeat his 20th-ranked French opponent 3-4 (9/11), 4-2, 4-1, 1-4, 4-1.
Home ยป NextGen ATP Finals 2024: Fonseca stuns Fils on opening day
The 18-year-old Fonseca, the youngest player in the eight-man field, made light of his lowly 145 world ranking to defeat his 20th-ranked French opponent 3-4 (9/11), 4-2, 4-1, 1-4, 4-1.