See main article: 2023 Chicago Men's Challenger.
Roman Safiullin was the defending champion[1] but chose not to defend his title.
Alex Michelsen won the title after defeating Yuta Shimizu 7–5, 6–2 in the final.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "2023 Chicago Men's Challenger – Singles".
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