H2H data updated: 2026-09-14 00:00 UTC
Compare the head-to-head record, career totals, season-by-season performance, and match log for Nadiia Kichenok vs Valentini Grammatikopoulou.
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| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Valentini Grammatikopoulou | 7-5 6-7(3) 6-0 | Nadiia Kichenok | Match data | Sep 17, 2022 | Q1 | Korea Open | WTA 250 | Hard |
1 qualifying meeting shown in the table; qualifying is excluded from the H2H score. Arrows show an edition's recorded category and documented modern equivalent; unresolved editions keep their recorded category. Asterisked totals include editions mapped from documented historical predecessor categories. Mapping details.
| Player | Current | Peak | Pts | Elo | W | L | Win % | GS | 1000 including documented historical predecessor categories | Finals | 500 including documented historical predecessor categories | 250 including documented historical predecessor categories | Titles |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nadiia Kichenok | #1,040 | #100 | 663 | 1,517 | 4 | 18 | 18.2% | 0 | 0 | 0 | 0 | 0 | 0 |
| Valentini Grammatikopoulou | #470 | #143 | 443 | 1,614 | 2 | 15 | 11.8% | 0 | 0 | 0 | 0 | 0 | 0 |
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 | Nadiia Kichenok | Valentini Grammatikopoulou | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 20 | 2013 | 2–4 | 33.3% | #101 | 1,491 | 0 | 0 | 2017 | 0–2 | 0.0% | #209 | 1,531 | 0 | 0 |
| 21 | 2014 | 2–8 | 20.0% | #192 | 1,442 | 0 | 0 | 2018 | 1–6 | 14.3% | #171 | 1,582 | 0 | 0 |
| 22 | 2015 | 0–3 | 0.0% | #324 | 1,415 | 0 | 0 | — | — | — | — | — | — | — |
| 23 | 2016 | 0–1 | 0.0% | #490 | 1,381 | 0 | 0 | — | — | — | — | — | — | — |
| 24 | — | — | — | — | — | — | — | 2021 | 1–3 | 25.0% | #183 | 1,525 | 0 | 0 |
| 25 | — | — | — | — | — | — | — | 2022 | 0–1 | 0.0% | #198 | 1,556 | 0 | 0 |
| 26 | 2019 | 0–1 | 0.0% | #627 | 1,424 | 0 | 0 | 2023 | 0–2 | 0.0% | #220 | 1,468 | 0 | 0 |
| 29 | 2022 | 0–1 | 0.0% | #687 | 1,414 | 0 | 0 | 2026 | 0–1 | 0.0% | #470 | 1,416 | 0 | 0 |
Seasons are aligned by the age each player spent most of that calendar year. Results cover completed main-draw matches. Bold green marks the higher win percentage when both players have at least 5 matches on that surface at the aligned age.
| Age | Nadiia Kichenok | Valentini Grammatikopoulou | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Grass | Yr | Hard | Clay | Grass | |||||||||||||||||||
| W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | |||
| 20 | 2013 | 1 | 3 | 4 | 25.0% | — | — | — | — | 1 | 1 | 2 | 50.0% | 2017 | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — |
| 21 | 2014 | 1 | 4 | 5 | 20.0% | 0 | 3 | 3 | 0.0% | 1 | 1 | 2 | 50.0% | 2018 | 0 | 3 | 3 | 0.0% | 1 | 2 | 3 | 33.3% | 0 | 1 | 1 | 0.0% |
| 22 | 2015 | 0 | 2 | 2 | 0.0% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 23 | 2016 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 24 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2021 | 1 | 2 | 3 | 33.3% | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 25 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2022 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 26 | 2019 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | 2023 | — | — | — | — | 0 | 2 | 2 | 0.0% | — | — | — | — |
| 29 | 2022 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | 2026 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| Career | — | 2 | 10 | 12 | 16.7% | 0 | 6 | 6 | 0.0% | 2 | 2 | 4 | 50.0% | — | 1 | 8 | 9 | 11.1% | 1 | 6 | 7 | 14.3% | 0 | 1 | 1 | 0.0% |
Seasons are aligned by the age each player spent most of that calendar year. Detailed serve and return statistics available for 16/22 of Nadiia Kichenok's and 16/17 of Valentini Grammatikopoulou's main draw matches. Sample is shown as matches with detailed serve and return statistics / total main draw matches. Bold green marks the stronger value when both stat samples contain at least 5 matches; lower is better for DFs/M.
| Age | Nadiia Kichenok | Valentini Grammatikopoulou | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Sample | Aces/M | DFs/M | 1st Sv% | 1st Pts% | 2nd Pts% | BP Saved% | BP Conv% | Svc Pts% | Ret Pts% | Yr | Sample | Aces/M | DFs/M | 1st Sv% | 1st Pts% | 2nd Pts% | BP Saved% | BP Conv% | Svc Pts% | Ret Pts% | |
| 20 | 2013 | 6/6 | 1.7 | 2.8 | 64.5% | 58.5% | 35.7% | 51.9% | 56.1% | 50.6% | 39.8% | 2017 | 1/2 | 0.0 | 7.0 | 63.2% | 62.7% | 33.3% | 56.3% | 33.3% | 51.9% | 41.5% |
| 21 | 2014 | 6/10 | 2.0 | 3.8 | 66.4% | 61.8% | 44.0% | 35.1% | 33.3% | 55.6% | 40.0% | 2018 | 7/7 | 0.3 | 4.1 | 70.5% | 49.1% | 37.6% | 40.6% | 46.1% | 45.5% | 41.3% |
| 22 | 2015 | 1/3 | 0.0 | 4.0 | 66.7% | 38.5% | 38.5% | 33.3% | 11.1% | 38.5% | 38.0% | — | —/— | — | — | — | — | — | — | — | — | — |
| 23 | 2016 | 1/1 | 1.0 | 5.0 | 56.5% | 60.0% | 44.4% | 20.0% | 50.0% | 53.2% | 32.8% | — | —/— | — | — | — | — | — | — | — | — | — |
| 24 | — | —/— | — | — | — | — | — | — | — | — | — | 2021 | 4/4 | 1.0 | 3.0 | 70.1% | 48.9% | 42.3% | 40.7% | 52.5% | 46.7% | 45.2% |
| 25 | — | —/— | — | — | — | — | — | — | — | — | — | 2022 | 1/1 | 0.0 | 0.0 | 69.6% | 41.0% | 52.9% | 54.5% | 50.0% | 44.6% | 36.5% |
| 26 | 2019 | 1/1 | 1.0 | 2.0 | 65.2% | 26.7% | 43.8% | 36.4% | 40.0% | 32.6% | 41.9% | 2023 | 2/2 | 0.5 | 2.5 | 57.6% | 42.3% | 41.9% | 48.1% | 50.5% | 42.1% | 51.0% |
| 29 | 2022 | 1/1 | 2.0 | 9.0 | 51.0% | 76.9% | 30.0% | 50.0% | 30.0% | 53.9% | 39.8% | 2026 | 1/1 | 0.0 | 7.0 | 54.0% | 53.7% | 40.0% | 40.0% | 45.5% | 47.4% | 48.2% |
| Career | — | 16/22 | 1.6 | 3.8 | 64.0% | 57.7% | 39.7% | 41.4% | 41.7% | 51.0% | 39.5% | — | 16/17 | 0.4 | 3.8 | 67.3% | 48.8% | 40.1% | 43.4% | 47.7% | 45.8% | 43.6% |
Seasons are aligned by the age each player spent most of that calendar year. Metrics use eligible main-draw results; point statistics use matches with detailed data. Bold green marks the stronger value when both underlying samples are sufficient. Lower is better for Schedule because a negative value means a tougher schedule. Career Schedule is normalized per 100 matches.
| Age | Nadiia Kichenok | Valentini Grammatikopoulou | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Elo | P+ | Serve+ | Return+ | PD | TPW% | Hard Elo | Clay Elo | Grass Elo | Set Win % | Set Margin | Dec. Set | Tiebreak | Pressure+ | Schedule | Yr | Elo | P+ | Serve+ | Return+ | PD | TPW% | Hard Elo | Clay Elo | Grass Elo | Set Win % | Set Margin | Dec. Set | Tiebreak | Pressure+ | Schedule | |
| 20 | 2013 | 1492 | 95.4 | -2.83 | -2.86 | 0.805 | 45.6% | -1 | — | — | 33.3% | -1.33 | — | 0–2 | — | +0.16 | 2017 | 1532 | 107.1 | -2.34 | -1.66 | 0.863 | 46.7% | — | — | — | 20.0% | -1.20 | 0–1 | 0–2 | — | +0.04 |
| 21 | 2014 | 1442 | 98.7 | -0.97 | -1.39 | 0.902 | 47.6% | +26 | +52 | — | 19.0% | -2.28 | 1–2 (33%) | 1–3 (25%) | 97.1 | +0.36 | 2018 | 1582 | 104.4 | -5.30 | -1.51 | 0.758 | 43.4% | -17 | +21 | — | 23.5% | -2.29 | 1–2 (33%) | — | — | +0.22 |
| 22 | 2015 | 1415 | 93.0 | -1.04 | -1.05 | 0.618 | 38.2% | — | — | — | 0.0% | -3.83 | — | — | — | -0.06 | 2019 | 1525 | 93.4 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 23 | 2016 | 1382 | 92.4 | +2.38 | -1.77 | 0.700 | 43.3% | — | — | — | 0.0% | -2.00 | — | — | — | -0.04 | 2020 | 1555 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 24 | 2017 | 1373 | 98.7 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2021 | 1526 | 105.4 | -2.51 | -1.06 | 0.847 | 46.1% | -6 | — | — | 33.3% | -1.33 | 0–1 | — | — | -0.11 |
| 25 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2022 | 1556 | 91.4 | -0.23 | -0.22 | 0.660 | 40.7% | — | — | — | 0.0% | -4.50 | — | — | — | -0.02 |
| 26 | 2019 | 1425 | 101.2 | -1.25 | -3.12 | 0.621 | 37.1% | — | — | — | 0.0% | -4.50 | — | — | — | +0.11 | 2023 | 1468 | 99.6 | -0.46 | -0.63 | 0.881 | 46.7% | — | — | — | 0.0% | -2.25 | — | 0–1 | — | +0.20 |
| 27 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2024 | 1435 | 98.5 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 28 | 2021 | 1403 | 93.3 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2025 | 1423 | 98.5 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 29 | 2022 | 1415 | 99.7 | -1.97 | -2.37 | 0.864 | 46.8% | — | — | — | 33.3% | -2.00 | 0–1 | — | — | +0.17 | 2026 | 1416 | 103.0 | -3.14 | +0.34 | 0.916 | 47.8% | — | — | — | 0.0% | -1.50 | — | 0–1 | — | +0.04 |
| 31 | 2024 | 1427 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 33 | 2026 | 1429 | 93.3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1518 | 92.7 | -1.54 | -2.11 | 0.805 | 45.3% | +14 | +52 | — | 19.6% | -2.30 | 1–3 (25%) | 1–5 (17%) | 94.0 | +3.18 | — | 1615 | 101.0 | -3.36 | -1.10 | 0.806 | 44.8% | -12 | +21 | — | 20.5% | -2.00 | 1–4 (20%) | 0–4 (0%) | 92.3 | +2.18 |
Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Urszula Radwanska | 0 | 2 | 2 | Oct 15, 2015 | H2H |
| Alison Riske-Amritraj | 0 | 2 | 2 | Jun 12, 2014 | H2H |
| Timea Babos | 2 | 0 | 2 | Jan 2, 2014 | H2H |
| Ulrikke Eikeri | 0 | 1 | 1 | Apr 6, 2022 | H2H |
| Martina Trevisan | 0 | 1 | 1 | Apr 3, 2019 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Alycia Parks | 0 | 1 | 1 | Jul 13, 2026 | H2H |
| Dalila Jakupovic | 0 | 1 | 1 | Jul 27, 2023 | H2H |
| Tamara Korpatsch | 0 | 1 | 1 | Jul 20, 2023 | H2H |
| Daria Saville | 0 | 1 | 1 | May 24, 2022 | H2H |
| Elise Mertens | 0 | 1 | 1 | Sep 2, 2021 | H2H |