Billy Harris and Gabriel Diallo have met 2 times since 2024; they are level 1–1. Their most recent meeting: Gabriel Diallo won at London / Queen's Club (2025).
Playing styles and historical archetype record
Harris
💥 Big Hitter
Diallo
🤖 Servebot
Matchup analysis
💥 Big Hitter vs 🤖 Servebot is historically tight (48% vs 52%, 8,421 matches). Neither style has a clear edge, so form, surface, and the head-to-head matter most.
2 career meetings, newest first
Hit rates on common betting markets · Last 90 days
| Outcome | Harris | Diallo | ||
|---|---|---|---|---|
| Outcome | Billy Harris | Gabriel Diallo | ||
| 1 or more | 93% | 13/14 | 100% | 6/6 |
| 3 or more | 71% | 10/14 | 50% | 3/6 |
| 5 or more | 50% | 7/14 | 0% | 0/6 |
| 10 or more | 36% | 5/14 | 0% | 0/6 |
| 15 or more | 7% | 1/14 | 0% | 0/6 |
| 20 or more | 7% | 1/14 | 0% | 0/6 |
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Harris | Diallo |
|---|---|---|
| W-L | 4–8 | 1–5 |
| Avg odds | 2.81 | 3.15 |
| ROI % | -34.8% | -73.5% |
| Units P/L | -4.18u | -4.41u |
Small sample: ROI stabilizes with more matches; fewer than 10 in the window is noisy.
Results vs. opponents both players faced · Last 12 months
Harris has a higher win rate against shared opponents (43% vs Diallo's 29%).
| Opponent | Harris | Diallo |
|---|---|---|
| Coleman Wong | W 75 36 61 | L 61 57 57 |
| Adrian Mannarino | W 64 67 64 | L 46 63 57 |
| Alex Molcan | L 16 67 | L 26 26 |
| Felix Auger-Aliassime | L 46 67 46 | L 76 36 36 |
| Ugo Humbert | L 67 16 | L 16 46 |
| Mattia Bellucci | W 63 64 | W 76 64 |
| Benjamin Bonzi | L 46 06 | W 64 64 |
Last five matches per player
Coleman Wong
Lexus Nottingham Open · Round of 32
Jun 15
Otto Virtanen
Lexus Nottingham Open · Quarterfinals
Jun 14
Arthur Gea
Lexus Nottingham Open · Round of 16
Jun 11
Clement Chidekh
Lexus Ilkley Open · Round of 32
Jun 10
Yunchaokete Bu
Lexus Birmingham Open · Round of 16
Jun 4
Martin Damm
Lexus Birmingham Open · Round of 32
Jun 2
Coleman Wong
Roland Garros · 1st Round Qualifying
May 24
Petr Brunclik
Oeiras Open 4 · Round of 32
May 11
Alex de Minaur
HSBC Championships · Round of 32
Jun 9
Adrian Mannarino
Libema Open · Round of 32
Jun 9
James Duckworth
Roland Garros · Round of 128
May 24
Alexander Zverev
BMW Open by Bitpanda · Round of 16
Apr 16
Vitaliy Sachko
BMW Open by Bitpanda · Round of 32
Apr 13
Joao Fonseca
Rolex Monte-Carlo Masters · Round of 64
Apr 6
Alex Molcan
Tiriac Open presented by UniCredit Bank · Round of 16
Apr 1
Ugo Humbert
Miami Open presented by Itau · Round of 64
Mar 8
Cumulative head-to-head lead over time
Matches, sets and games won · Last 12 months · 39–67 matches
| Metric | Harris | Diallo |
|---|---|---|
| Matches won | 45% | 36% |
| Sets won | 45% | 42% |
| Games won | 49% | 48% |
Head-to-head record by tournament tier
| Stage | Harris | Diallo |
|---|---|---|
| ATP 500 | 0 | 1 |
| ATP 250 | 1 | 0 |
Head-to-head record per surface
| Surface | Harris | Diallo |
|---|---|---|
| Grass | 1 | 1 |
