H2H data updated: 2026-07-18 22:33 UTC
Joao Fonseca vs Gabriel Diallo H2H: 1-0
Joao Fonseca holds a 1–0 lead over Gabriel Diallo in their ATP head-to-head. Across 1 main-draw meeting, Joao Fonseca leads 1–0 on clay. Most recently, Joao Fonseca won the 2026 Rolex Monte-Carlo Masters second round 6-2 6-3.
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Brazil
Age 19
Right-Handed
188 cm / 6'2"
H2H
1
–
0
1 main draw meetings
Canada
Age 24
Right-Handed
203 cm / 6'8"
H2H Match Log
| Date | Tournament | Category | Round | Surface | Winner | Score | Loser | Match |
|---|---|---|---|---|---|---|---|---|
| Apr 6, 2026 | Rolex Monte-Carlo Masters | Masters 1000 | R64 | Clay | Joao Fonseca | 6-2 6-3 | Gabriel Diallo | Match data |
Career Comparison
| Player | Current | Peak | Pts | Elo | W | L | Win % | GS | 1000 | Finals | 500 | 250 | Titles |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Joao Fonseca | #27 | #24 | 1,735 | 1,949 | 46 | 35 | 56.8% | 0 | 0 | 0 | 1 | 1 | 2 |
| Gabriel Diallo | #93 | #33 | 1,388 | 1,874 | 43 | 50 | 46.2% | 0 | 0 | 0 | 0 | 1 | 1 |
Career Progression by Age
Seasons are aligned by the age each player spent most of that calendar year. GS and Titles are cumulative career totals through that season.
| Age | Joao Fonseca | Gabriel Diallo | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 16 | 2023 | 0–1 | 0.0% | #727 | 1,493 | 0 | 0 | — | — | — | — | — | — | — |
| 17 | 2024 | 5–6 | 45.5% | #145 | 1,553 | 0 | 0 | — | — | — | — | — | — | — |
| 18 | 2025 | 24–16 | 60.0% | #24 | 1,818 | 0 | 2 | — | — | — | — | — | — | — |
| 19 | 2026 | 17–12 | 58.6% | #27 | 1,890 | 0 | 2 | — | — | — | — | — | — | — |
| 21 | — | — | — | — | — | — | — | 2023 | 1–4 | 20.0% | #139 | 1,477 | 0 | 0 |
| 22 | — | — | — | — | — | — | — | 2024 | 6–7 | 46.2% | #87 | 1,721 | 0 | 0 |
| 23 | — | — | — | — | — | — | — | 2025 | 28–23 | 54.9% | #41 | 1,809 | 0 | 1 |
| 24 | — | — | — | — | — | — | — | 2026 | 8–16 | 33.3% | #93 | 1,695 | 0 | 1 |