H2H data updated: 2026-07-19 01:17 UTC
Gabriel Diallo vs Billy Harris H2H: 1-1
Gabriel Diallo and Billy Harris are tied 1–1 in their ATP head-to-head. Across 2 main-draw meetings, they are tied 1–1 on grass. Most recently, Gabriel Diallo won the 2025 HSBC Championships third round 6-1 3-6 6-4.
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Canada
Age 24
Right-Handed
203 cm / 6'8"
H2H
1
–
1
2 main draw meetings
Great Britain
Age 31
Right-Handed
196 cm / 6'5"
H2H Match Log
| Date | Tournament | Category | Round | Surface | Winner | Score | Loser | Match |
|---|---|---|---|---|---|---|---|---|
| Jun 19, 2025* | HSBC Championships | ATP 500 | R32 | Grass | Gabriel Diallo | 6-1 3-6 6-4 | Billy Harris | Match data |
| Jul 18, 2024* | Newport | ATP 250 | R32 | Grass | Billy Harris | 7-6(4) 7-5 | Gabriel Diallo | Match data |
* Estimated match date where the exact historical date is unavailable.
Career Comparison
| Player | Current | Peak | Pts | Elo | W | L | Win % | GS | 1000 | Finals | 500 | 250 | Titles |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gabriel Diallo | #93 | #33 | 1,388 | 1,874 | 43 | 50 | 46.2% | 0 | 0 | 0 | 0 | 1 | 1 |
| Billy Harris | #154 | #101 | 582 | 1,672 | 10 | 16 | 38.5% | 0 | 0 | 0 | 0 | 0 | 0 |
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 | Gabriel Diallo | Billy Harris | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 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 | — | — | — | — | — | — | — |
| 28 | — | — | — | — | — | — | — | 2023 | 1–1 | 50.0% | #199 | 1,564 | 0 | 0 |
| 29 | — | — | — | — | — | — | — | 2024 | 6–6 | 50.0% | #125 | 1,595 | 0 | 0 |
| 30 | — | — | — | — | — | — | — | 2025 | 3–8 | 27.3% | #128 | 1,576 | 0 | 0 |
| 31 | — | — | — | — | — | — | — | 2026 | 0–1 | 0.0% | #154 | 1,518 | 0 | 0 |