| Singles | |
|---|---|
| 2024 Las Vegas Challenger | |
| Champion |  Learner Tien |
| Runner-up | Tristan Boyer |
| Score | 7–5, 1–6, 6–3 |
Tennys Sandgren was the defending champion [1] but chose not to defend his title.
Learner Tien won the title after defeating Tristan Boyer 7–5, 1–6, 6–3 in the final. [2]
Patrick Kypson (first round) Denis Kudla (quarterfinals) Learner Tien (champion) Brandon Holt (first round)
Abdullah Shelbayh (semifinals) Tristan Boyer (final)
Bernard Tomic (quarterfinals, retired)
Juan Pablo Ficovich (second round)| Semifinals | Final | ||||||||||||
| 6 | Tristan Boyer | 4 | 6 | 77 | |||||||||
 Karue Sell | 6 | 1 | 64 | ||||||||||
| 6 | Tristan Boyer | 5 | 6 | 3 | |||||||||
| 3 | Learner Tien | 7 | 1 | 6 | |||||||||
| 3 | Learner Tien | 6 | 3 | 6 | |||||||||
| 5 | Abdullah Shelbayh | 3 | 6 | 4 | |||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | P Kypson | 3 | 6 | 1 | |||||||||||||||||||||||
| A Martin | 6 | 1 | 6 | A Martin | 6 | 7 | |||||||||||||||||||||
| L Saville | 2 | 5 | Q | Q Vandecasteele | 1 | 5 | |||||||||||||||||||||
| Q | Quinn Vandecasteele | 6 | 7 | A Martin | 6 | 3 | 63 | ||||||||||||||||||||
| Christian Langmo | 3 | 1 | 6 | T Boyer | 3 | 6 | 77 | ||||||||||||||||||||
| WC | Colton Smith | 6 | 6 | WC | C Smith | 65 | 2 | ||||||||||||||||||||
| Q | O Kumar | 6 | 2 | 3 | 6 | T Boyer | 77 | 6 | |||||||||||||||||||
| 6 | T Boyer | 4 | 6 | 6 | 6 | T Boyer | 4 | 6 | 77 | ||||||||||||||||||
| 4 | B Holt | 63 | 6 | 4 | K Sell | 6 | 1 | 64 | |||||||||||||||||||
| Q | Patrick Maloney | 77 | 1 | 6 | Q | P Maloney | 3 | 4 | |||||||||||||||||||
| Alt | G Nanda | 4 | 4 | WC | K Bigun | 6 | 6 | ||||||||||||||||||||
| WC | K Bigun | 6 | 6 | WC | K Bigun | 2 | 3 | ||||||||||||||||||||
| S Kirchheimer | 1 | 2 | K Sell | 6 | 6 | ||||||||||||||||||||||
| Karue Sell | 6 | 6 | K Sell | 3 | 6 | 713 | |||||||||||||||||||||
| Q | C Altamirano | 3 | 5 | 8 | JP Ficovich | 6 | 1 | 611 | |||||||||||||||||||
| 8 | JP Ficovich | 6 | 7 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 7 | B Tomic | 77 | 6 | ||||||||||||||||||||||||
| Micah Braswell | 61 | 4 | 7 | B Tomic | 7 | 63 | 6 | ||||||||||||||||||||
| B Kuzuhara | 5 | 4 | E Spizzirri | 5 | 77 | 4 | |||||||||||||||||||||
| E Spizzirri | 7 | 6 | 7 | B Tomic | 5 | 0r | |||||||||||||||||||||
| C Kingsley | 5 | 77 | 6 | 3 | L Tien | 7 | 0 | ||||||||||||||||||||
| WC | JJ Tracy | 7 | 60 | 3 | C Kingsley | 3 | 3 | ||||||||||||||||||||
| Q | A Rybakov | 78 | 2 | 2 | 3 | L Tien | 6 | 6 | |||||||||||||||||||
| 3 | L Tien | 66 | 6 | 6 | 3 | L Tien | 6 | 3 | 6 | ||||||||||||||||||
| 5 | A Shelbayh | 6 | 3 | 7 | 5 | A Shelbayh | 3 | 6 | 4 | ||||||||||||||||||
| Q | T Hilderbrand | 3 | 6 | 5 | 5 | A Shelbayh | 6 | 6 | |||||||||||||||||||
 M Gengel | 6 | 6 | M Gengel | 3 | 4 | ||||||||||||||||||||||
 N Nakagawa | 3 | 2 | 5 | A Shelbayh | 6 | 3 | 6 | ||||||||||||||||||||
| J Trotter | 6 | 4 | 6 | 2 | D Kudla | 4 | 6 | 2 | |||||||||||||||||||
 E Escobedo | 4 | 6 | 4 | J Trotter | 4 | 1 | |||||||||||||||||||||
 J Monday | 65 | 3 | 2 | D Kudla | 6 | 6 | |||||||||||||||||||||
| 2 | D Kudla | 77 | 6 | ||||||||||||||||||||||||
Austin Krajicek and Tennys Sandgren were the defending champions.
Austin Krajicek and Tennys Sandgren were the defending champions, but chose not to defend their title.
Julien Benneteau and Édouard Roger-Vasselin won an all French final, beating Grégoire Barrère and Tristan Lamasine 7–6(7–4), 3–6, [10–5]
Chase Buchanan and Tennys Sandgren were the defending champions but only Sandgren chose to defend his title, partnering Austin Krajicek. Sandgren lost in the quarterfinals to Brian Baker and Sam Groth.
Juan Mónaco was the defending champion, but lost in the first round to Dustin Brown.
Bjorn Fratangelo was the defending champion but chose not to defend his title.
Ivo Karlović was the defending champion, but lost in the quarterfinals to Peter Gojowczyk.
Darian King was the defending champion but lost in the first round to Mackenzie McDonald.
Sam Groth was the defending champion but retired in the second round against Jan Choinski.
Reilly Opelka was the defending champion but lost in the first round to Tennys Sandgren.
Pablo Cuevas was the three-time defending champion, but lost in the semifinals to Fabio Fognini.
Steve Johnson was the defending champion and successfully defended his title, defeating Tennys Sandgren in the final, 7–6(7–2), 2–6, 6–4.
Mischa Zverev was the defending champion, but chose not to participate this year.
Shang Juncheng was the defending champion but chose not to defend his title.
Julian Cash and Henry Patten were the defending champions but chose not to defend their title.
Steve Johnson was the defending champion but chose not to defend his title after retiring from professional tennis earlier in the 2024 season.
Lorenzo Sonego won the singles title at the 2024 Winston-Salem Open, defeating Alex Michelsen in the final, 6–0, 6–3. He did not drop a set and did drop serve once en route to his fourth ATP Tour title, and first since 2022.
Abdullah Shelbayh was the defending champion but lost in the second round to Alexis Galarneau.
Zachary Svajda was the defending champion but chose not to defend his title.
Zachary Svajda was the defending champion but chose not to defend his title.
Defending champion Jannik Sinner defeated Alexander Zverev in the final, 6–3, 7–6(7–4), 6–3 to win the men's singles tennis title at the 2025 Australian Open. It was his second Australian Open title and third major title overall. Sinner became the youngest man to defend the title since Jim Courier in 1993, and the youngest to defend their first major title since Rafael Nadal at the 2006 French Open.