H2H data updated: 2026-09-01 00:00 UTC
Klara Koukalova holds a 1–0 lead over Katarzyna Piter in their WTA head-to-head. Across 1 main-draw meeting, Klara Koukalova leads 1–0 on clay. Most recently, Klara Koukalova won the 2014 Rio de Janeiro quarterfinal 6-4 6-0.
Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Klara Koukalova | 6-4 6-0 | Katarzyna Piter | Match data | Feb 22, 2014* | QF | Rio de Janeiro | International → modern equivalent WTA 250 | Clay |
Estimated match date where the exact historical date is unavailable. 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Klara Koukalova | #566 | #20 | 1,860 | 1,803 | 275 | 288 | 48.8% | 0 | 0 | 0 | 0 | 3 | 3 |
| Katarzyna Piter | #1,075 | #95 | 648 | 1,574 | 8 | 20 | 28.6% | 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 | Klara Koukalova | Katarzyna Piter | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 16 | — | — | — | — | — | — | — | 2007 | 0–1 | 0.0% | #676 | 1,498 | 0 | 0 |
| 18 | — | — | — | — | — | — | — | 2009 | 0–1 | 0.0% | #334 | 1,491 | 0 | 0 |
| 19 | 2001 | 5–4 | 55.6% | #139 | 1,519 | 0 | 0 | 2010 | 1–1 | 50.0% | #249 | 1,505 | 0 | 0 |
| 20 | 2002 | 4–5 | 44.4% | #117 | 1,527 | 0 | 0 | — | — | — | — | — | — | — |
| 21 | 2003 | 14–19 | 42.4% | #63 | 1,537 | 0 | 0 | — | — | — | — | — | — | — |
| 22 | 2004 | 26–23 | 53.1% | #46 | 1,611 | 0 | 0 | 2013 | 3–2 | 60.0% | #119 | 1,548 | 0 | 0 |
| 23 | 2005 | 32–19 | 62.7% | #35 | 1,764 | 0 | 2 | 2014 | 4–12 | 25.0% | #163 | 1,472 | 0 | 0 |
| 24 | 2006 | 10–22 | 31.2% | #117 | 1,546 | 0 | 2 | — | — | — | — | — | — | — |
| 25 | 2007 | 12–12 | 50.0% | #63 | 1,578 | 0 | 2 | 2016 | 0–1 | 0.0% | #243 | 1,466 | 0 | 0 |
| 26 | 2008 | 21–22 | 48.8% | #72 | 1,574 | 0 | 2 | — | — | — | — | — | — | — |
| 27 | 2009 | 8–17 | 32.0% | #90 | 1,533 | 0 | 2 | 2018 | 0–1 | 0.0% | #290 | 1,471 | 0 | 0 |
| 28 | 2010 | 20–20 | 50.0% | #41 | 1,656 | 0 | 2 | — | — | — | — | — | — | — |
| 29 | 2011 | 29–25 | 53.7% | #41 | 1,713 | 0 | 2 | — | — | — | — | — | — | — |
| 30 | 2012 | 24–22 | 52.2% | #28 | 1,721 | 0 | 2 | 2021 | 0–1 | 0.0% | #518 | 1,421 | 0 | 0 |
| 31 | 2013 | 27–25 | 51.9% | #35 | 1,675 | 0 | 2 | — | — | — | — | — | — | — |
| 32 | 2014 | 29–27 | 51.8% | #40 | 1,611 | 0 | 3 | — | — | — | — | — | — | — |
| 33 | 2015 | 14–22 | 38.9% | #99 | 1,549 | 0 | 3 | — | — | — | — | — | — | — |
| 34 | 2016 | 0–4 | 0.0% | #400 | 1,486 | 0 | 3 | — | — | — | — | — | — | — |
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 | Klara Koukalova | Katarzyna Piter | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Grass | Carpet | Yr | Hard | Clay | Grass | Carpet | |||||||||||||||||||||||||
| W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | |||
| 16 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2007 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 18 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2009 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 19 | 2001 | — | — | — | — | 5 | 3 | 8 | 62.5% | — | — | — | — | 0 | 1 | 1 | 0.0% | 2010 | — | — | — | — | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — |
| 20 | 2002 | 0 | 2 | 2 | 0.0% | 4 | 3 | 7 | 57.1% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 2003 | 3 | 6 | 9 | 33.3% | 11 | 11 | 22 | 50.0% | 0 | 1 | 1 | 0.0% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | 2004 | 8 | 12 | 20 | 40.0% | 13 | 9 | 22 | 59.1% | 5 | 2 | 7 | 71.4% | — | — | — | — | 2013 | 3 | 2 | 5 | 60.0% | — | — | — | — | — | — | — | — | — | — | — | — |
| 23 | 2005 | 16 | 11 | 27 | 59.3% | 11 | 6 | 17 | 64.7% | 5 | 1 | 6 | 83.3% | 0 | 1 | 1 | 0.0% | 2014 | 1 | 7 | 8 | 12.5% | 3 | 4 | 7 | 42.9% | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 24 | 2006 | 4 | 11 | 15 | 26.7% | 4 | 7 | 11 | 36.4% | 1 | 3 | 4 | 25.0% | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 25 | 2007 | 5 | 7 | 12 | 41.7% | 7 | 5 | 12 | 58.3% | — | — | — | — | — | — | — | — | 2016 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — |
| 26 | 2008 | 6 | 9 | 15 | 40.0% | 15 | 10 | 25 | 60.0% | 0 | 2 | 2 | 0.0% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 27 | 2009 | 1 | 7 | 8 | 12.5% | 7 | 9 | 16 | 43.8% | 0 | 1 | 1 | 0.0% | — | — | — | — | 2018 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 28 | 2010 | 12 | 11 | 23 | 52.2% | 5 | 8 | 13 | 38.5% | 3 | 1 | 4 | 75.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 29 | 2011 | 16 | 15 | 31 | 51.6% | 10 | 7 | 17 | 58.8% | 2 | 2 | 4 | 50.0% | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 30 | 2012 | 8 | 12 | 20 | 40.0% | 8 | 6 | 14 | 57.1% | 5 | 3 | 8 | 62.5% | 3 | 1 | 4 | 75.0% | 2021 | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 31 | 2013 | 17 | 16 | 33 | 51.5% | 7 | 6 | 13 | 53.8% | 2 | 2 | 4 | 50.0% | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 32 | 2014 | 18 | 17 | 35 | 51.4% | 4 | 6 | 10 | 40.0% | 6 | 3 | 9 | 66.7% | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 33 | 2015 | 5 | 14 | 19 | 26.3% | 6 | 5 | 11 | 54.5% | 3 | 3 | 6 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 34 | 2016 | 0 | 4 | 4 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 119 | 154 | 273 | 43.6% | 117 | 101 | 218 | 53.7% | 32 | 24 | 56 | 57.1% | 7 | 9 | 16 | 43.8% | — | 4 | 10 | 14 | 28.6% | 4 | 8 | 12 | 33.3% | 0 | 2 | 2 | 0.0% | — | — | — | — |
Seasons are aligned by the age each player spent most of that calendar year. Metrics are precomputed from eligible main-draw results; point-stat values use the available detailed sample. 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 | Klara Koukalova | Katarzyna Piter | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | |
| 16 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2007 | 1498 | 108.9 | +0.50 | +4.61 | 0.712 | 43.0% | — | — | — | 0.0% | -2.50 | — | — | — | -0.18 |
| 18 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2009 | 1492 | 93.6 | -2.41 | -1.70 | 0.383 | 25.7% | — | — | — | 0.0% | -6.00 | — | — | — | -0.06 |
| 19 | 2001 | 1520 | 104.0 | — | — | — | — | — | +55 | — | 47.8% | +0.26 | 4–1 (80%) | 0–1 | — | +1.03 | 2010 | 1506 | 101.0 | -1.13 | -0.93 | 0.651 | 40.4% | — | — | — | 40.0% | -1.60 | 1–0 | 1–0 | — | +0.16 |
| 20 | 2002 | 1527 | 105.4 | — | — | — | — | — | +71 | — | 50.0% | -0.42 | 2–4 (33%) | 1–0 | — | +0.68 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 2003 | 1537 | 119.8 | — | — | — | — | -60 | +108 | — | 44.4% | -0.35 | 7–8 (47%) | 1–3 (25%) | — | +0.56 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | 2004 | 1612 | 117.6 | — | — | — | — | -110 | +85 | +30 | 49.5% | -0.07 | 8–7 (53%) | 6–4 (60%) | — | +0.67 | 2013 | 1548 | 110.2 | -0.66 | -1.69 | 0.971 | 49.7% | +15 | — | — | 53.8% | +0.08 | 2–1 (67%) | 1–1 | — | -0.22 |
| 23 | 2005 | 1764 | 126.4 | — | — | — | — | -90 | +7 | -18 | 55.5% | +0.09 | 15–4 (79%) | 9–2 (82%) | — | +1.13 | 2014 | 1473 | 94.4 | -4.47 | -3.09 | 0.761 | 44.1% | +3 | +81 | — | 28.9% | -1.76 | 3–3 (50%) | 1–3 (25%) | — | +0.10 |
| 24 | 2006 | 1547 | 107.1 | — | — | — | — | +14 | +77 | +135 | 37.0% | -1.05 | 2–7 (22%) | 3–3 (50%) | — | +0.20 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 25 | 2007 | 1579 | 115.5 | — | — | — | — | -13 | +59 | — | 50.0% | +0.06 | 3–5 (38%) | 3–4 (43%) | — | +0.21 | 2016 | 1467 | 92.6 | -2.75 | -6.59 | 0.717 | 41.9% | — | — | — | 0.0% | -3.50 | — | — | — | +0.11 |
| 26 | 2008 | 1574 | 111.3 | — | — | — | — | -45 | +84 | — | 48.5% | -0.08 | 10–9 (53%) | 3–5 (38%) | — | +0.48 | 2017 | 1449 | 88.2 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 27 | 2009 | 1534 | 110.3 | — | — | — | — | -72 | +97 | — | 35.0% | -0.95 | 5–5 (50%) | 4–5 (44%) | — | -0.40 | 2018 | 1471 | 98.5 | -0.69 | -1.43 | 0.588 | 39.6% | — | — | — | 0.0% | -3.00 | — | — | — | -0.09 |
| 28 | 2010 | 1657 | 126.4 | — | — | — | — | -49 | -66 | +4 | 46.2% | -0.20 | 10–5 (67%) | 5–6 (45%) | — | +0.89 | 2019 | 1466 | 99.7 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 29 | 2011 | 1713 | 131.7 | — | — | — | — | -15 | -60 | -54 | 50.4% | -0.03 | 13–6 (68%) | 7–4 (64%) | — | +0.80 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 30 | 2012 | 1721 | 128.0 | — | — | — | — | -45 | -9 | -3 | 51.0% | +0.17 | 10–6 (63%) | 5–7 (42%) | — | -0.68 | 2021 | 1421 | 87.4 | +0.59 | +3.47 | 0.783 | 44.2% | — | — | — | 33.3% | -1.67 | 0–1 | — | — | -0.20 |
| 31 | 2013 | 1676 | 139.6 | — | — | — | — | -9 | +65 | +31 | 51.7% | +0.15 | 9–9 (50%) | 6–9 (40%) | — | -1.87 | 2022 | 1415 | 97.0 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 32 | 2014 | 1612 | 127.9 | -2.87 | -0.03 | 0.906 | 47.8% | +13 | +61 | +151 | 50.8% | -0.13 | 10–8 (56%) | 11–4 (73%) | — | -0.55 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 33 | 2015 | 1549 | 110.8 | -2.79 | +1.36 | 0.935 | 48.1% | -28 | +101 | +170 | 40.5% | -0.84 | 2–6 (25%) | 3–4 (43%) | — | -0.51 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 34 | 2016 | 1486 | 101.6 | -2.24 | -1.27 | 0.765 | 45.0% | -28 | — | — | 27.3% | -1.55 | 0–3 (0%) | 0–1 | — | +0.16 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 35 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2026 | 1403 | 97.4 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1804 | 125.9 | -2.79 | +0.55 | 0.910 | 47.8% | -34 | +51 | +56 | 47.9% | -0.19 | 110–93 (54%) | 67–62 (52%) | 106.6 | +0.50 | — | 1575 | 92.7 | -2.67 | -2.04 | 0.754 | 43.9% | +8 | +81 | — | 31.3% | -1.62 | 6–5 (55%) | 3–4 (43%) | 102.2 | -1.36 |
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 |
|---|---|---|---|---|---|
| Anabel Medina Garrigues | 5 | 6 | 11 | Mar 20, 2013 | H2H |
| Lucie Safarova | 6 | 4 | 10 | Aug 7, 2013 | H2H |
| Flavia Pennetta | 4 | 5 | 9 | Aug 21, 2014 | H2H |
| Maria Kirilenko | 3 | 5 | 8 | Sep 19, 2014 | H2H |
| Samantha Stosur | 2 | 5 | 7 | Jul 24, 2015 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Annika Beck | 0 | 2 | 2 | Jul 17, 2014 | H2H |
| Petra Kvitova | 0 | 1 | 1 | Jun 23, 2021 | H2H |
| Zarina Diyas | 0 | 1 | 1 | May 23, 2018 | H2H |
| Anna Karolina Schmiedlova | 0 | 1 | 1 | Sep 22, 2016 | H2H |
| Misaki Doi | 0 | 1 | 1 | Sep 18, 2014 | H2H |