2021 Chicago Challenger
The 2021 Chicago Challenger was a professional tennis tournament played on outdoor hard courts. It was part of the 2021 WTA 125K series. It was the second edition of the tournament which took place from August 16 to 22, 2021 in Chicago, United States.
Champions
Singles
Clara Tauson def. Emma Raducanu, 6–1, 2–6, 6–4Doubles
Eri Hozumi / Peangtarn Plipuech def. Mona Barthel / Hsieh Yu-chieh, 7–5, 6–2Singles main draw entrants
Seeds
1 Rankings are as of 9 August 2021.Other entrants
The following players received wildcards into the singles main draw:The following players received entry using protected rankings:
The following players received entry from the qualifying draw:
Withdrawals
;Before the tournament- Mona Barthel → replaced by Harmony Tan
- Nao Hibino → replaced by Ana Konjuh
- Kaia Kanepi → replaced by Anna Kalinskaya
- Marta Kostyuk → replaced by Nuria Párrizas Díaz
- Anastasia Potapova → replaced by Jule Niemeier
- Nina Stojanović → replaced by Greet Minnen
Doubles main draw entrants
Seeds
- Rankings are as of 9 August 2021
Other entrants
The following pair received a wildcard into the doubles main draw:The following pairs received entry into the doubles main draw using protected rankings:
Withdrawals
;Before the tournament- Eri Hozumi / Valeria Savinykh → replaced by Eri Hozumi / Peangtarn Plipuech