| Oracle Challenger Series – Chicago | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Tournament information | |||||||||
| Event name | Oracle Challenger Series – Chicago | ||||||||
| Location | Chicago, United States | ||||||||
| Venue | XS Tennis Village | ||||||||
| Surface | Hard | ||||||||
| Website | oraclechallengerseries.com | ||||||||
| Current champions (2023) | |||||||||
| Women's singles |  Viktoriya Tomova | ||||||||
| Women's doubles |  Ulrikke Eikeri  Ingrid Neel | ||||||||
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The Oracle Challenger Series – Chicago is a professional tennis tournament played outdoor on hard courts. It is part of the Women's Tennis Association (WTA) 125K series and an ATP Challenger Tour. The tournament takes place at XS Tennis Village in Chicago, United States. From 2021 onwards, it became exclusively a WTA 125 tournament.
| Year | Champion | Runner-up | Score |
|---|---|---|---|
| 2018 |  Denis Istomin |
 Reilly Opelka |
6–4, 6–2 |
| Year | Champion | Runner-up | Score |
|---|---|---|---|
| 2018 |  Petra Martić |
 Mona Barthel |
6–4, 6–1 |
| 2019–20 | Not held | ||
| 2021 |  Clara Tauson |
 Emma Raducanu |
6–1, 2–6, 6–4 |
| 2022 | Not held | ||
| 2023 | Viktoriya Tomova |
Claire Liu |
6–1, 6–4 |
| Year | Champions | Runners-up | Score |
|---|---|---|---|
| 2018 | Luke Bambridge Neal Skupski |
 Leander Paes Miguel Ángel Reyes-Varela |
6–3, 6–4 |
| Year | Champions | Runners-up | Score |
|---|---|---|---|
| 2018 | Mona Barthel  Kristýna Plíšková |
Asia Muhammad Maria Sanchez |
6–3, 6–2 |
| 2019–20 | Not held | ||
| 2021 |  Eri Hozumi  Peangtarn Plipuech |
Mona Barthel  Hsieh Yu-chieh |
7–5, 6–2 |
| 2022 | Not held | ||
| 2023 | Ulrikke Eikeri Ingrid Neel |
 Cristina Bucșa  Alexandra Panova |
walkover |
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WTA 125 tournaments (since 2012)
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