| Singles | |
|---|---|
| 2024 Chicago Men's Challenger | |
| Champion |  Gabriel Diallo |
| Runner-up |  Bu Yunchaokete |
| Score | 6–3, 7–6(7–3) |
Alex Michelsen was the defending champion [1] but chose not to defend his title.
Gabriel Diallo won the title after defeating Bu Yunchaokete 6–3, 7–6(7–3) in the final.
Térence Atmane (second round) Benjamin Bonzi (first round) Hugo Grenier (quarterfinals) Gabriel Diallo (champion) Alexis Galarneau (first round) Bu Yunchaokete (final)
Coleman Wong (first round)
Hong Seong-chan (quarterfinals)| Semifinals | Final | ||||||||||||
| Q |  Jacob Fearnley | 2 | 3 | ||||||||||
| 4 | Gabriel Diallo | 6 | 6 | ||||||||||
| 4 | Gabriel Diallo | 6 | 77 | ||||||||||
| 6 | Bu Yunchaokete | 3 | 63 | ||||||||||
| 6 | Bu Yunchaokete | 6 | 7 | ||||||||||
| WC |  Learner Tien | 4 | 5 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1/SE | T Atmane | 77 | 77 | ||||||||||||||||||||||||
| Micah Braswell | 64 | 65 | 1/SE | T Atmane | 2 | 6 | 63 | ||||||||||||||||||||
| Q | J Fearnley | 6 | 6 | Q | J Fearnley | 6 | 1 | 77 | |||||||||||||||||||
 L Tu | 4 | 3 | Q | J Fearnley | 6 | 6 | |||||||||||||||||||||
| Alt | B Holt | 6 | 77 | Alt | B Holt | 3 | 2 | ||||||||||||||||||||
| WC | Andrew Fenty | 1 | 64 | Alt | B Holt | 6 | 77 | ||||||||||||||||||||
| M Polmans | 2 | 77 | 6 | M Polmans | 4 | 64 | |||||||||||||||||||||
| 5 | A Galarneau | 6 | 65 | 4 | Q | J Fearnley | 2 | 3 | |||||||||||||||||||
| 4 | G Diallo | 6 | 6 | 4 | G Diallo | 6 | 6 | ||||||||||||||||||||
| Q |  J Trotter | 4 | 2 | 4 | G Diallo | 77 | 6 | ||||||||||||||||||||
 J Fonseca | 6 | 6 | J Fonseca | 61 | 1 | ||||||||||||||||||||||
| Y Shimizu | 3 | 4 | 4 | G Diallo | 6 | 6 | |||||||||||||||||||||
| M Krueger | 6 | 6 | M Krueger | 3 | 2 | ||||||||||||||||||||||
| Arthur Gea | 4 | 4 | M Krueger | 6 | 6 | ||||||||||||||||||||||
| P Sekulic | 6 | 6 | P Sekulic | 4 | 2 | ||||||||||||||||||||||
| 7 | C Wong | 2 | 1 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 6 | Y Bu | 6 | 6 | ||||||||||||||||||||||||
| Q | Michael Zheng | 4 | 4 | 6 | Y Bu | 6 | 6 | ||||||||||||||||||||
| Q |  T-l Wu | 4 | 6 | 1 | P Jubb | 3 | 3 | ||||||||||||||||||||
| P Jubb | 6 | 2 | 6 | 6 | Y Bu | 6 | 69 | 6 | |||||||||||||||||||
| WC | N Basavareddy | 2 | 78 | 7 | 3 | H Grenier | 2 | 711 | 1 | ||||||||||||||||||
| Q |  M Lajal | 6 | 66 | 5 | WC | N Basavareddy | 4 | 0 | |||||||||||||||||||
| B Tomic | 2 | 4 | 3 | H Grenier | 6 | 6 | |||||||||||||||||||||
| 3 | H Grenier | 6 | 6 | 6 | Y Bu | 6 | 7 | ||||||||||||||||||||
| 8 | S-c Hong | 6 | 6 | WC | L Tien | 4 | 5 | ||||||||||||||||||||
| A Bolt | 4 | 3 | 8 | S-c Hong | 6 | 64 | 6 | ||||||||||||||||||||
| S Shimabukuro | 77 | 2 | 65 | C Broom | 3 | 77 | 4 | ||||||||||||||||||||
| C Broom | 64 | 6 | 77 | 8 | S-c Hong | 3 | 1 | ||||||||||||||||||||
 JP Ficovich | 4 | 6 | 5 | WC | L Tien | 6 | 6 | ||||||||||||||||||||
| Q | Aidan Mayo | 6 | 3 | 7 | Q | A Mayo | 3 | 77 | 3 | ||||||||||||||||||
| WC | L Tien | 6 | 6 | WC | L Tien | 6 | 64 | 6 | |||||||||||||||||||
| 2 | B Bonzi | 4 | 4 | ||||||||||||||||||||||||
Lorenzo Musetti won the boys' singles tennis title at the 2019 Australian Open, defeating Emilio Nava in the final, 4–6, 6–2, 7–6(14–12). He saved a championship point in the third-set tiebreak.
Matheus Pucinelli de Almeida and Thiago Agustín Tirante won the boys' doubles tennis title at the 2019 French Open, defeating Flavio Cobolli and Dominic Stricker in the final, 7–6(7–3), 6–4.
David Ionel and Leandro Riedi won the boys' doubles tennis title at the 2020 Australian Open, defeating Mikołaj Lorens and Kārlis Ozoliņš in the final, 6–7(8–10), 7–5, [10–4].
Bruno Kuzuhara and Coleman Wong defeated Alex Michelsen and Adolfo Daniel Vallejo in the final, 6–3, 7–6(7–3) to win the boys' doubles title at the 2022 Australian Open. Wong became the first Hongkonger win an Australian Open title, and the first Hongkonger to win two titles at majors, having previously won the junior doubles at the 2021 US Open.
Sebastian Gorzny and Alex Michelsen defeated Gabriel Debru and Paul Inchauspé in the final, 7–6(7–5), 6–3 to win the boys' doubles tennis title at the 2022 Wimbledon Championships.
Dominic Stricker was the defending champion but chose not to defend his title.
Wu Yibing defeated John Isner in the final, 6–7(4–7), 7–6(7–3), 7–6(14–12) to win the singles tennis title at the 2023 Dallas Open. Wu became the first Chinese man in the Open Era to reach an ATP Tour singles final and win a title. He saved four championship points en route to the title.
Daniel Altmaier was the defending champion but lost in the quarterfinals to Yuta Shimizu.
Li Tu was the defending champion but lost in the first round to Emilio Gómez.
Taylor Fritz defeated Aleksandar Vukic in the final, 7–5, 6–7(5–7), 6–4 to win the singles tennis title at the 2023 Atlanta Open. It was his sixth ATP Tour singles title.
Gao Xin and Sun Fajing were the defending champions but only Sun chose to defend his title, partnering Yasutaka Uchiyama. Sun and Uchiyama withdrew from their quarterfinals match against Alex Bolt and Luke Saville.
Nikoloz Basilashvili was the defending champion but chose not to defend his title.
This was the first edition of the tournament.
Jordan Thompson defeated Casper Ruud in the final, 6–3, 7–6(7–4) to win the singles tennis title at the 2024 Los Cabos Open. It was his first ATP Tour singles title and he saved three match points en route, in the quarterfinals against Alex Michelsen.
Ben Shelton defeated the defending champion Frances Tiafoe in the final, 7–5, 4–6, 6–3 to win the singles tennis title at the 2024 U.S. Men's Clay Court Championships. It was his second career ATP Tour title, and his first on clay. Shelton became the youngest player to win the tournament since Andy Roddick in 2002.
Aleksandar Vukic was the defending champion but chose not to defend his title.
Daniel Altmaier was the defending champion but chose not to defend his title.
Jordan Thompson was the defending champion but chose not to defend his title.
Marcos Giron defeated Alex Michelsen in the final, 6–7(4–7), 6–3, 7–5 to win the singles tennis title at the 2024 Hall of Fame Open. Giron saved a championship point en route to his first ATP Tour singles title. Michelsen finished as runner-up at the tournament for the second year in a row.
Steve Johnson was the defending champion but didn't defend his title as he had retired from professional tennis.