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#1438 · Age 56 · Japan
8–8#282 · Age 27 · Japan
4–9Last 20 · all courts · 16/20 / 13/20 matches available
Green marks the favorable figure, not a prediction.
| Y. Naito | Selected matches | M. Yamaguchi |
|---|---|---|
Serve— / 10 recorded matches | ||
| no data | Serve points won | 49.4% |
| no data | 1st serve points won | 57.8% |
| no data | 2nd serve points won | 33.3% |
| no data | Service games won | 48.5% |
| no data | Aces / match | 1.5 |
| no data | Double faults / match ↓ | 1.8 |
Return— / 10 recorded matches | ||
| no data | Return points won | 44.7% |
| no data | Return games won | 38.5% |
PressureSample per value | ||
| no data | Break points saved | 37.0%n=10 |
| no data | Break points converted | 52.9%n=10 |
| 1–5 · 16.7%n=5 | Tie-breaks won | 1–2 · favorable recorded figure · 33.3%n=3 |
FormSelected matches | ||
| 8–8 · favorable recorded figuren=16 | Match record | 4–9n=13 |
| 7–0 · favorable recorded figuren=7 | After winning set 1 | 3–4n=7 |
| 1–8n=9 | After losing set 1 | 1–5 · favorable recorded figuren=6 |
| 1–1n=2 | Deciding sets | 1–4n=5 |
SurfacesVerified courts · selected matches | ||
| 2–2 · favorable recorded figure | Hard | 2–3 |
Oldest → latest · same selected matches
| Y. Naito | Same window | M. Yamaguchi |
|---|---|---|
| no data | First serves in | 65.6% |
| no data | 1st serve return points won | 38.5% |
| no data | 2nd serve return points won | 56.6% |
| no data | Total points won | 47.0% |
| no data | Total games won | 43.6% |
| no data | Winners / match | 17.0 |
| no data | Unforced errors / match ↓ | 10.6 |
Court distance is measured on court, not travel between venues. Distance and speed require three measured matches per player; their averages use measured matches only.
Separate annual scope. Only profiles observed before this match are included; these records do not change with the recent-match filter. Recorded years may be incomplete.
Singles won–lost · recorded years may be incomplete.
| Y. Naito | Year | M. Yamaguchi |
|---|---|---|
| 107–115 · favorable recorded figure | Recorded career | 114–124 |
| no data | 2026 | 20–26 |
| 2–5 | 2025 | 30–33 · favorable recorded figure |
| 19–24 | 2024 | 30–21 · favorable recorded figure |
| 20–25 · favorable recorded figure | 2023 | 12–19 |
| 34–23 · favorable recorded figure | 2022 | 6–8 |
| 10–13 | 2021 | 11–11 · favorable recorded figure |
| 6–5 | 2020 | 4–3 · favorable recorded figure |
| 5–6 | 2019 | no data |
| 6–4 | 2018 | 0–2 |
| 2–5 | 2017 | 1–1 |
| 3–5 | 2016 | no data |
Doubles won–lost · recorded years may be incomplete.
| Y. Naito | Year | M. Yamaguchi |
|---|---|---|
| 69–54 · favorable recorded figure | Recorded career | 14–21 |
| no data | 2026 | 1–3 |
| 0–2 | 2025 | no data |
| 26–18 · favorable recorded figure | 2024 | 1–2 |
| 15–8 · favorable recorded figure | 2023 | 5–7 |
| 9–12 | 2022 | 1–1 |
| 4–3 · favorable recorded figure | 2021 | 3–6 |
| 2–1 · favorable recorded figure | 2020 | 3–2 |
| 8–3 | 2018 | no data |
| 4–4 | 2017 | no data |
| 1–3 | 2016 | no data |
Only results observed as finished before match start are eligible. The current match, later results and unverified historical versions are excluded. Some historical observations were not recorded before this match; they are not reconstructed from later totals. Partial windows are shown honestly, without filling from another court or older matches.
Court is known for 4/16 / 5/13 selected matches. Indoor means a verified indoor court; unknown is not outdoor. Retirement outcomes remain in form, but partial-match performance is excluded. Rates use recorded point totals when complete, otherwise mean match rates. A 0/0 rate is undefined, not zero.
Travel distance, height, handedness and weekly ranking history: not available in this comparison. Values without a pre-start observation remain missing; we do not substitute current career or season totals.
