2025 Koser Jewelers Tennis Challenge
Tennis tournament
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The 2025 Koser Jewelers Tennis Challenge was a professional tennis tournament played on outdoor hard courts. It was the eighteenth edition of the tournament, which was part of the 2025 ITF Women's World Tennis Tour. It took place in Landisville, Pennsylvania, United States, between 4 and 10 August 2025.[1]
| 2025 Koser Jewelers Tennis Challenge | |
|---|---|
| Date | 4–10 August 2025 |
| Edition | 18th |
| Category | ITF Women's World Tennis Tour |
| Prize money | $100,000 |
| Surface | Hard / Outdoor |
| Location | Landisville, United States |
| Champions | |
| Singles | |
 Petra Marčinko | |
| Doubles | |
 Carmen Corley / Ivana Corley | |
Champions
Singles
Petra Marčinko def. 
Janice Tjen, 7–6(7–4), 3–6, 6–4
Doubles
Carmen Corley / Ivana Corley def. 
Ingrid Martins / 
Simona Waltert, 4–6, 7–6(7–4), [12–10]
Singles main draw entrants
Seeds
| Country | Player | Rank | Seed |
|---|---|---|---|
 AUS |
Talia Gibson | 107 | 1 |
 SUI |
Simona Waltert | 128 | 2 |
| CRO |
Petra Marčinko | 133 | 3 |
 FRA |
Jessika Ponchet | 139 | 4 |
| Tatiana Prozorova | 140 | 5 | |
 CHN |
Wei Sijia | 146 | 7 |
| CHN |
Wang Xiyu | 158 | 8 |
 THA |
Lanlana Tararudee | 167 | 8 |
- Rankings are as of 28 July 2025.
Other entrants
The following players received wildcards into the singles main draw:
- Haley Giavara
- Elizabeth Ionescu
- Alana Smith
The following players received entry from the qualifying draw:
- Ayana Akli
- Robin Anderson
Mayu Crossley- Amelia Honer
- Saki Imamura
- Elvina Kalieva
- Himeno Sakatsume
Katherine Sebov
The following player received entry as a lucky loser:
- Rachel Gailis