Head-to-Head
Overview
Joao Fonseca and Gabriel Diallo have met 1 time so far, all in 2026. Joao Fonseca leads 1–0. Their first encounter was at the 2026 Monte Carlo (R64), won by Joao Fonseca.
By surface
- clay1 – 0
Joao Fonseca and Gabriel Diallo have met 1 time so far, all in 2026. Joao Fonseca leads 1–0. Their first encounter was at the 2026 Monte Carlo (R64), won by Joao Fonseca.