Alyssa Ahn vs Klara Kosan Head-to-Head Stats, Results & Performance Comparison
Wojtek Kolan
Published on 20 Jun at 09:46 PM UTC
HEAD TO HEAD
A. Ahn vs K. Kosan

USA
3
Win
Played
0
Win

USA
3
Win
Played
0
Win
Head-to-head: Ahn 3 - 0 Kosan
They have played 8 sets in total, with Alyssa Ahn winning 6 and Klara Kosan winning 2. The last match between Alyssa Ahn and Klara Kosan was at the W15 Rancho Santa Fe, 20-06-2025, Round: QF, Surface: Hard, with Alyssa Ahn getting the victory 6-3 4-6 6-2.
| Players | Head To Head Match Wins |
|---|---|
| Ahn | 3 |
| Kosan | 0 |
Last 3 H2H Matches:
(QF) W15 Rancho Santa Fe(06-20-25)
(R1) W15 San Diego(06-10-25)
(R1) W15 Irvine(06-28-23)
A. Ahn vs K. Kosan H2H Profile
A. Ahn vs K. Kosan Match Preview:
- Recent performance on second serves indicates a slight edge for Kosan, winning 38.69% of these points compared to Ahn's 36.61%.
- Ahn has an upper hand in return games, capturing 51.17% of opponents' second serve points, outperforming Kosan who has 46%.
- Both players have similar success in first serve returns, with Ahn at 34.45% and Kosan slightly ahead at 35.74%.
- Under pressure, Ahn excels by saving 47.86% of breakpoints, while Kosan manages 39.39%.
- Regarding overall match performance over the past year, Ahn's win rate stands at 62.96%, significantly better than Kosan's 50%.
- On hard courts, Ahn and Kosan have comparable success, with both achieving a win rate of about 54% on this surface.
- Ahn shows greater success at the Futures/Satellites/ITF $10K level, boasting a 64.29% win rate compared to Kosan's 55.56%.
- In direct head-to-head meetings, Ahn has won both encounters against Kosan, dominating with four set victories to Kosan's one.
- Matches between Ahn and Kosan tend to last around 1:59:31 on average, indicating closely contested battles.
- Under extreme pressure situations such as ties, Kosan has the slight edge, winning the only tiebreak they've played against Ahn.
- When facing higher-ranked competition, Kosan has encountered tougher opponents, with an average rank of 350.32, compared to Ahn's 386.19.
- If this match reaches a deciding set, Kosan has a better track record, winning 57% of these sets vs. Ahn's 44% over the last year.
- Ahn is slightly more efficient in converting breakpoints, succeeding 46.48% of the time, compared to Kosan's 41.18%.
Editorial Prediction (June 20, 2025, UTC):
As we analyze the upcoming match between Ahn and Kosan, several performance statistics reveal potential advantages for both players. Kosan shows a slight edge in second serve success, an area strongly correlated with match outcomes.
However, Ahn's superior return game and breakpoint efficiency suggest a potential stronghold in controlling key moments. Additionally, Ahn's more successful track record in handling pressure and higher match win percentage over the past year builds a compelling case in their favor.
With their existing head-to-head dominance and better performance in converting key opportunities, Ahn has demonstrated superiority in crucial aspects. Therefore, Ahn is statistically the likely winner for their upcoming encounter based on current and historical data.
Alyssa Ahn vs Klara Kosan Editorial Preview By TennisTipster88.
A. Ahn vs K. Kosan H2H Stats Used In Our Predictions
| Stats | ||
|---|---|---|
| 3 | H2H Matches Won | 0 |
| 6 | Sets Won | 2 |
| 47 | Games Won | 29 |
| 1 | Aces (Total) | 2 |
| 5 | Total Double Faults | 17 |
| 2:1:49 | Average Match Time | 2:1:49 |
| 63% (143/228) | 1st Serve % | 66% (166/253) |
| 60% (86/143) | 1st Serve Win % | 54% (90/166) |
| 52% (44/85) | 2nd Serve Win % | 39% (34/87) |
| 51% (18/35) | Break Pts Won % | 35% (11/31) |
| 51% (129/253) | Return Points Win % | 43% (98/228) |
| 100% (3/3) | Best‑of‑3 Win % | 0% (0/3) |
| 100% (2/2) | Deciding Set Win % | 0% (0/2) |
| 100% (2/2) | 1st Set Won, Won Match | 0% (0/1) |
| 0% (0/2) | 1st Set Won, Lost Match | 100% (1/1) |
| 100% (1/1) | 1st Set Lost, Won Match | 0% (0/2) |
Recent Performance Stats
A. Ahn Recent Matches Played
| OPPONENT | RESULT | SCORE | H2H | |
|---|---|---|---|---|
R1 | L | 6-2 6-0 | ||
R1 | L | 6-1 6-0 | ||
R2 | L | 6-4 6-0 | ||
R1 | W | 6-3 2-2 ret. | ||
Q3 | W | 6-3 6-1 | ||
K. Kosan Recent Matches Played
| OPPONENT | RESULT | SCORE | H2H | |
|---|---|---|---|---|
Q1 | L | 7-6(2) 6-3 | ||
R2 | L | 6-1 6-0 | ||
R1 | W | 4-1 ret. | ||
Q3 | W | 6-0 6-2 | ||
Q1 | L | 6-3 6-4 | ||

A. Ahn vs K. Kosan Stats Breakdown Vs All H2H Opponents
| Stats | ||
|---|---|---|
| 55.68% (49/39) | YTD Win/Loss | 45.07% (32/39) |
| 53.50% (107/93) | Sets Win/Loss | 45.86% (72/85) |
| 52.02% (940/867) | Games Win/Loss | 48.65% (685/723) |
| 55.68% (49/39) | Hard Win/Loss | 45.45% (25/30) |
| 0% (0/0) | Clay Win/Loss | 0.00% (0/4) |
| 0% (0/0) | Indoor Hard W/L | 58.33% (7/5) |
| 0.07 | Aces Per Game | 0.03 |
| 60 | Aces Total | 21 |
| 0.12 | Double Faults Per Game | 0.2 |
| 103 | Total Double Faults | 137 |
| 1:29:21 | Average Match Time | 1st Match |
| 344.74 | Average Opponent Rank | 349.08 |
| 58% (2789/4833) | 1st Serve % | 62% (1041/1674) |
| 59% (1637/2789) | 1st Serve Win % | 54% (567/1041) |
| 46% (946/2044) | 2nd Serve Win % | 40% (254/633) |
| 50% (293/589) | Break Points Won % (Total) | 47% (88/189) |
| 46% (2219/4778) | Return Points Win % | 44% (710/1607) |
| 0.00% (0/1) | Slam W/L | 0% (0/0) |
| 0.00% (0/2) | Main Tour W/L | 0% (0/0) |
| 53.33% (16/14) | Challenger W/L | 26.32% (5/14) |
| 60.00% (33/22) | Futures W/L | 51.92% (27/25) |
| 55% (48/87) | Best of 3 Sets Win % | 44% (31/70) |
| 67% (10/15) | Tiebreaks Win % (Total) | 57% (4/7) |
| 60% (15/25) | Deciding Set Win % | 44% (7/16) |
| 91% (47/43) | 1st Set Won, Won Match | 87% (31/27) |
| 9% (47/4) | 1st Set Won, Lost Match | 13% (31/4) |
| 15% (41/6) | 1st Set Lost, Won Match | 13% (40/5) |
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