H2H data updated: 2026-07-19 19:16 UTC
Kei Nishikori vs Diego Hartfield H2H: 1-0
Kei Nishikori holds a 1–0 lead over Diego Hartfield in their ATP head-to-head. Across 1 main-draw meeting, Kei Nishikori leads 1–0 on hard courts. Most recently, Kei Nishikori won the 2008 San Jose third round 7-5 6-3.
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Japan
Age 36
Right-Handed
178 cm / 5'10"
H2H
1
–
0
1 main draw meetings
ARG
Age 45
Right-Handed
185 cm / 6'1"
H2H Match Log
| Date | Tournament | Category | Round | Surface | Winner | Score | Loser | Match |
|---|---|---|---|---|---|---|---|---|
| Feb 21, 2008* | San Jose | ATP 250 | R32 | Hard | Kei Nishikori | 7-5 6-3 | Diego Hartfield | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Kei Nishikori | #464 | #4 | 6,385 | 2,245 | 424 | 226 | 65.2% | 0 | 0 | 0 | 5 | 7 | 12 |
| Diego Hartfield | #949 | #73 | 523 | 1,661 | 18 | 29 | 38.3% | 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 | Kei Nishikori | Diego Hartfield | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 17 | 2007 | 3–5 | 37.5% | #286 | 1,576 | 0 | 0 | — | — | — | — | — | — | — |
| 18 | 2008 | 16–10 | 61.5% | #63 | 1,792 | 0 | 1 | — | — | — | — | — | — | — |
| 19 | 2009 | 3–6 | 33.3% | #418 | 1,743 | 0 | 1 | — | — | — | — | — | — | — |
| 20 | 2010 | 3–9 | 25.0% | #98 | 1,743 | 0 | 1 | — | — | — | — | — | — | — |
| 21 | 2011 | 32–22 | 59.3% | #25 | 1,922 | 0 | 1 | — | — | — | — | — | — | — |
| 22 | 2012 | 32–17 | 65.3% | #19 | 1,971 | 0 | 2 | — | — | — | — | — | — | — |
| 23 | 2013 | 34–19 | 64.2% | #17 | 1,940 | 0 | 3 | — | — | — | — | — | — | — |
| 24 | 2014 | 52–15 | 77.6% | #5 | 2,211 | 0 | 7 | — | — | — | — | — | — | — |
| 25 | 2015 | 51–17 | 75.0% | #8 | 2,131 | 0 | 10 | 2006 | 2–2 | 50.0% | #131 | 1,534 | 0 | 0 |
| 26 | 2016 | 52–20 | 72.2% | #5 | 2,151 | 0 | 11 | 2007 | 14–20 | 41.2% | #89 | 1,594 | 0 | 0 |
| 27 | 2017 | 30–14 | 68.2% | #22 | 2,067 | 0 | 11 | 2008 | 2–7 | 22.2% | #169 | 1,589 | 0 | 0 |
| 28 | 2018 | 43–21 | 67.2% | #9 | 2,105 | 0 | 11 | — | — | — | — | — | — | — |
| 29 | 2019 | 29–14 | 67.4% | #13 | 2,001 | 0 | 12 | — | — | — | — | — | — | — |
| 30 | 2020 | 2–4 | 33.3% | #41 | 1,911 | 0 | 12 | — | — | — | — | — | — | — |
| 31 | 2021 | 24–15 | 61.5% | #47 | 1,945 | 0 | 12 | — | — | — | — | — | — | — |
| 33 | 2023 | 2–1 | 66.7% | #352 | 1,938 | 0 | 12 | — | — | — | — | — | — | — |
| 34 | 2024 | 7–8 | 46.7% | #106 | 1,863 | 0 | 12 | — | — | — | — | — | — | — |
| 35 | 2025 | 9–9 | 50.0% | #156 | 1,809 | 0 | 12 | — | — | — | — | — | — | — |