Elise Mertens def. Lulu Sun — Round of 64, US Open 2025
Grand SlamHardNew York, USA
Played27 Aug 2025
🇧🇪ranked WTA number 21 going into this drawWon
Elise Mertens seeded 19 6 6
🇳🇿ranked WTA number 102 going into this draw
Lulu Sun 2 3
🇧🇪Elise Mertens
🇳🇿Lulu Sun
Match stats
Serve
7
Aces
4
3
Double faults
4
64%
1st serve in
53%
71%
1st serve points won
58%
50%
2nd serve points won
41%
64%
Service points won
50%
4/5
Break points saved
4/9
Serve speed (km/h)
188
Fastest serve
180
164
Average 1st serve
163
133
Average 2nd serve
136
Return
50%
Return points won
36%
5/9
Break points won
1/5
Points
17
Winners
20
15
Unforced errors
26
3/7
Net points won
13/21
64
Total points won
49
Stats, 6 months going in
Won–lost
6–4
Last 10 matches
4–6
4–3
Last 30 days
3–3
By surface
6–5
Hard
5–5
6–5
Clay
2–3
8–2
Grass
2–4
By round
6–1
R64
1–4
6–5
R32
2–3
4–2
At Grand Slams
1–2
How their matches go
32
Completed matches
21
50%
Won in straight sets
19%
13%
Won after losing a set
24%
22%
Lost after winning a set
5%
16%
Lost in straight sets
52%
7–6
Tiebreaks
1–4
4–7
Deciding sets
5–1
16/20
Won after winning set 1
7/7
4/12
Won after losing set 1
2/14
Serve and return, last 5 matches
59%
1st serve in
56%
74%
1st serve points won
73%
47%
2nd serve points won
42%
61%
Break points saved
56%
46%
Return points won
36%
49%
Break points won
50%
6.6
Aces a match
7.8
3.4
Double faults a match
5.0
Last 14 days
4
Matches
2
9
Sets
5
2
Days since last match
3
Common opponents, 6 monthsCommon opponents, 6 months going in
| Opponent | Elise Mertens | Lulu Sun |
|---|---|---|
| 🇨🇴Osorio SerranoNo. 57 | ||
| 🇨🇴Osorio SerranoNo. 57 | WonMadrid R64 | WonNew York R128 |
| 🇫🇷BlinkovaNo. 78 | ||
| 🇫🇷BlinkovaNo. 78 | WonMonterrey R32 | LostEastbourne R16 |
| 🇷🇺AlexandrovaNo. 14 | ||
| 🇷🇺AlexandrovaNo. 14 | Won's-Hertogenbosch SF | LostCincinnati R64 |
| 🇫🇷GrachevaNo. 83 | ||
| 🇫🇷GrachevaNo. 83 | WonCharleston R32 | WonMadrid R128 |
| 🇨🇳ZhengNo. 7 | ||
| 🇨🇳ZhengNo. 7 | LostCharleston R16 | LostIndian Wells R32 |
| Total | ||
| Total | 4–1 | 2–3 |