Rankings, career records and tournament history for the ATP field, plus the head to head between any two of them.
| Rank | Player | Country |
|---|---|---|
| 1 | Jannik Sinner | Italy |
| 4 | Ben Shelton | United States |
| 42 | Denis Shapovalov | Canada |
| 59 | Jan-Lennard Struff | Germany |
| 79 | Roman Safiullin | Russia |
| 82 | Zachary Svajda | United States |
| 87 | Lorenzo Sonego | Italy |
| 100 | Toby Samuel | Great Britain |
| 109 | Sho Shimabukuro | Japan |
| 111 | Alexander Shevchenko | Kazakhstan |
| 112 | Dane Sweeny | Australia |
| 126 | Dalibor Svrcina | Czech Republic |
| 135 | Stefanos Sakellaridis | Greece |
| 136 | Thiago Seyboth Wild | Brazil |
| 137 | Rei Sakamoto | Japan |
| 143 | Eliot Spizzirri | United States |
| 154 | Ilia Simakin | Neutral |
| 155 | Tristan Schoolkate | Australia |
| 172 | Vitaliy Sachko | Ukraine |
| 176 | Joel Schwaerzler | Austria |
| 199 | Timofey Skatov | Kazakhstan |
| 200 | Colton Smith | United States |
| 259 | Juncheng Shang | China |
| 314 | Fajing Sun | China |
| 317 | Matias Soto | Chile |
| 343 | Dominic Stricker | Switzerland |
| 363 | Trevor Svajda | United States |
| 472 | Max Schoenhaus | Germany |
| 9999 | Ziga Sesko | Slovenia |
| 9999 | Dhakshineswar Suresh | India |
| 9999 | Abdullah Shelbayh | Jordan |
| 9999 | Hamish Stewart | Great Britain |
