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| Jan 15 • 01:00 | Alexandr Dolgopolov |  | - |  | Andreas Haider-Maurer | 3 | : | 0 |
| Jan 15 • 01:00 | Pablo Carreño Busta |  | - |  | Jason Kubler | 3 | : | 1 |
| Jan 15 • 01:00 | Pablo Cuevas |  | - |  | Mikhail Youzhny | 3 | : | 0 |
| Jan 15 • 01:00 | Dudi Sela |  | - |  | Ryan Harrison | 2 | : | 3 |
| Jan 15 • 01:00 | Kevin Anderson |  | - |  | Kyle Edmund | 2 | : | 3 |
| Jan 15 • 01:00 | Pierre-Hugues Herbert |  | - |  | Denis Istomin | 1 | : | 3 |
| Jan 15 • 02:30 | Matthew Ebden | | - | | John Isner | 3 | : | 1 |
| Jan 15 • 02:30 | Federico Delbonis |  | - |  | Gilles Müller | 0 | : | 3 |
| Jan 15 • 02:30 | David Ferrer | | - | | Andrey Rublev | 2 | : | 3 |
| Jan 15 • 02:30 | Viktor Troicki |  | - | | Alex Bolt | 3 | : | 2 |
| Jan 15 • 02:30 | Philipp Kohlschreiber |  | - |  | Yoshihito Nishioka | 2 | : | 3 |
| Jan 15 • 02:30 | Andreas Seppi |  | - | | Corentin Moutet | 3 | : | 1 |
| Jan 15 • 03:00 | Diego Schwartzman | | - | | Dušan Lajović | 3 | : | 2 |
| Jan 15 • 04:00 | Paolo Lorenzi | | - |  | Damir Džumhur | 2 | : | 3 |
| Jan 15 • 04:00 | Lu Yen-Hsun |  | - |  | Marin Čilić | 0 | : | 0 |
| Jan 15 • 04:00 | Grigor Dimitrov |  | - | | Dennis Novak | 3 | : | 0 |
| Jan 15 • 04:00 | Stefanos Tsitsipas |  | - |  | Denis Shapovalov | 0 | : | 3 |
| Jan 15 • 04:00 | Vasek Pospisil | | - | | Marin Čilić | 1 | : | 3 |
| Jan 15 • 04:30 | John Millman | | - | | Borna Ćorić | 3 | : | 0 |
| Jan 15 • 04:30 | Gilles Simon | | - |  | Marius Copil | 3 | : | 0 |
| Jan 15 • 04:30 | Marcos Baghdatis |  | - |  | Yuki Bhambri | 3 | : | 0 |
| Jan 15 • 04:30 | Gerald Melzer | | - |  | Nikoloz Basilashvili | 1 | : | 3 |
| Jan 15 • 04:30 | Ivo Karlović | | - | | Laslo Djere | 3 | : | 0 |
| Jan 15 • 06:00 | Nicolás Jarry |  | - | | Leonardo Mayer | 0 | : | 3 |
| Jan 15 • 06:00 | Casper Ruud |  | - | | Quentin Halys | 3 | : | 2 |
| Jan 15 • 06:00 | Salvatore Caruso | | - |  | Malek Jaziri | 2 | : | 3 |
| Jan 15 • 06:00 | Dustin Brown | | - |  | João Sousa | 2 | : | 3 |
| Jan 15 • 06:00 | Mackenzie McDonald | | - |  | Elias Ymer | 3 | : | 1 |
| Jan 15 • 06:00 | Ruben Bemelmans |  | - | | Lucas Pouille | 3 | : | 1 |
| Jan 15 • 06:00 | Yuichi Sugita | | - | | Jack Sock | 3 | : | 1 |
| Jan 15 • 08:30 | Kevin King | | - | | Jo-Wilfried Tsonga | 0 | : | 3 |
| Jan 15 • 08:45 | Nick Kyrgios | | - |  | Rogério Dutra da Silva | 3 | : | 0 |
| Jan 15 • 09:00 | Rafael Nadal | | - |  | Víctor Estrella Burgos | 3 | : | 0 |
| Jan 16 • 01:00 | Václav Šafránek |  | - | | Jiří Veselý | 0 | : | 3 |
| Jan 16 • 01:00 | Filip Krajinović | | - | | Adrian Mannarino | 0 | : | 0 |
| Jan 16 • 01:00 | Roberto Bautista-Agut | | - | | Fernando Verdasco | 0 | : | 3 |
| Jan 16 • 01:00 | Cedrik-Marcel Stebe | | - | | Maximilian Marterer | 0 | : | 3 |
| Jan 16 • 01:00 | Julien Benneteau | | - | | Taro Daniel | 3 | : | 1 |
| Jan 16 • 01:00 | Radu Albot |  | - |  | Márton Fucsovics | 1 | : | 3 |
| Jan 16 • 01:00 | Nicolás Kicker | | - | | Jordan Thompson | 3 | : | 2 |
| Jan 16 • 01:00 | Lukáš Lacko |  | - | | Milos Raonic | 3 | : | 1 |
| Jan 16 • 01:00 | Matteo Berrettini | | - | | Adrian Mannarino | 0 | : | 3 |
| Jan 16 • 02:30 | Mikhail Kukushkin |  | - | | Peter Gojowczyk | 0 | : | 3 |
| Jan 16 • 02:30 | Thomas Fabbiano | | - | | Alexander Zverev | 0 | : | 3 |
| Jan 16 • 02:30 | David Goffin | | - | | Matthias Bachinger | 3 | : | 1 |
| Jan 16 • 02:30 | Sam Querrey | | - | | Feliciano López | 3 | : | 0 |
| Jan 16 • 02:30 | Lorenzo Sonego | | - |  | Robin Haase | 3 | : | 1 |
| Jan 16 • 04:00 | Jérémy Chardy | | - | | Tennys Sandgren | 0 | : | 3 |
| Jan 16 • 04:30 | Steve Johnson | | - | | Denis Kudla | 1 | : | 3 |
| Jan 16 • 04:30 | Ričardas Berankis |  | - |  | Stanislas Wawrinka | 1 | : | 3 |
| Jan 16 • 04:30 | Gaël Monfils | | - | | Jaume Munar | 3 | : | 0 |
| Jan 16 • 04:30 | Tim Smyczek | | - | | Alexei Popyrin | 3 | : | 1 |
| Jan 16 • 04:30 | Jared Donaldson | | - | | Albert Ramos-Viñolas | 0 | : | 3 |
| Jan 16 • 04:30 | Thanasi Kokkinakis | | - | | Daniil Medvedev | 1 | : | 3 |
| Jan 16 • 04:30 | Horacio Zeballos | | - | | Fabio Fognini | 0 | : | 3 |
| Jan 16 • 04:30 | Richard Gasquet | | - |  | Blaž Kavčič | 3 | : | 0 |
| Jan 16 • 04:30 | Kwon Soon-woo |  | - | | Jan-Lennard Struff | 0 | : | 3 |
| Jan 16 • 05:00 | Novak Djokovic | | - | | Donald Young | 3 | : | 0 |
| Jan 16 • 05:00 | Evgeny Donskoy | | - | | Florian Mayer | 3 | : | 0 |
| Jan 16 • 06:00 | Dominic Thiem | | - | | Guido Pella | 3 | : | 0 |
| Jan 16 • 06:00 | Mischa Zverev | | - | | Chung Hyeon | 0 | : | 1 |
| Jan 16 • 06:00 | Guillermo García López | | - | | Benoît Paire | 3 | : | 1 |
| Jan 16 • 06:00 | Karen Khachanov | | - | | Peter Polansky | 3 | : | 0 |
| Jan 16 • 08:45 | Tomáš Berdych | | - | | Alex De Minaur | 3 | : | 1 |
| Jan 16 • 09:00 | Aljaž Bedene | | - | | Roger Federer | 0 | : | 3 |
| Jan 16 • 10:30 | Frances Tiafoe | | - | | Juan Martín del Potro | 0 | : | 3 |
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| Jan 17 • 01:00 | Pablo Carreño Busta | | - | | Gilles Simon | 1 | : | 0 |
| Jan 17 • 01:00 | Malek Jaziri | | - | | Gilles Müller | 2 | : | 3 |
| Jan 17 • 01:00 | Nikoloz Basilashvili | | - | | Ruben Bemelmans | 3 | : | 0 |
| Jan 17 • 01:00 | Yoshihito Nishioka | | - | | Andreas Seppi | 0 | : | 3 |
| Jan 17 • 02:30 | Denis Shapovalov | | - | | Jo-Wilfried Tsonga | 2 | : | 3 |
| Jan 17 • 02:30 | Kyle Edmund | | - | | Denis Istomin | 3 | : | 0 |
| Jan 17 • 03:00 | Ivo Karlović | | - | | Yuichi Sugita | 3 | : | 2 |
| Jan 17 • 04:00 | Rafael Nadal | | - | | Leonardo Mayer | 3 | : | 0 |
| Jan 17 • 04:00 | Pablo Cuevas | | - | | Ryan Harrison | 0 | : | 3 |
| Jan 17 • 04:00 | João Sousa | | - | | Marin Čilić | 0 | : | 3 |
| Jan 17 • 05:00 | John Millman | | - | | Damir Džumhur | 1 | : | 3 |
| Jan 17 • 06:00 | Diego Schwartzman | | - | | Casper Ruud | 3 | : | 0 |
| Jan 17 • 06:00 | Marcos Baghdatis | | - | | Andrey Rublev | 1 | : | 3 |
| Jan 17 • 08:45 | Nick Kyrgios | | - | | Viktor Troicki | 3 | : | 0 |
| Jan 17 • 09:00 | Grigor Dimitrov | | - | | Mackenzie McDonald | 3 | : | 2 |
| Jan 17 • 10:30 | Alexandr Dolgopolov | | - | | Matthew Ebden | 3 | : | 0 |
| Jan 18 • 01:00 | Dominic Thiem | | - | | Denis Kudla | 3 | : | 2 |
| Jan 18 • 01:00 | Tim Smyczek | | - | | Albert Ramos-Viñolas | 0 | : | 3 |
| Jan 18 • 01:00 | Sam Querrey | | - | | Márton Fucsovics | 1 | : | 3 |
| Jan 18 • 01:00 | Nicolás Kicker | | - | | Lukáš Lacko | 3 | : | 1 |
| Jan 18 • 02:30 | Tomáš Berdych | | - | | Guillermo García López | 3 | : | 1 |
| Jan 18 • 03:00 | Jiří Veselý | | - | | Adrian Mannarino | 1 | : | 3 |
| Jan 18 • 04:00 | Novak Djokovic | | - | | Gaël Monfils | 3 | : | 1 |
| Jan 18 • 04:00 | Chung Hyeon | | - | | Daniil Medvedev | 3 | : | 0 |
| Jan 18 • 04:00 | Karen Khachanov | | - | | Juan Martín del Potro | 1 | : | 3 |
| Jan 18 • 04:30 | Evgeny Donskoy | | - | | Fabio Fognini | 1 | : | 3 |
| Jan 18 • 06:00 | Fernando Verdasco | | - | | Maximilian Marterer | 2 | : | 3 |
| Jan 18 • 06:00 | Richard Gasquet | | - | | Lorenzo Sonego | 3 | : | 0 |
| Jan 18 • 06:30 | David Goffin | | - | | Julien Benneteau | 1 | : | 3 |
| Jan 18 • 07:00 | Peter Gojowczyk | | - | | Alexander Zverev | 1 | : | 3 |
| Jan 18 • 10:30 | Tennys Sandgren | | - | | Stanislas Wawrinka | 3 | : | 0 |
| Jan 18 • 10:30 | Jan-Lennard Struff | | - | | Roger Federer | 0 | : | 3 |
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| Jan 19 • 01:00 | Kyle Edmund | | - | | Nikoloz Basilashvili | 3 | : | 2 |
| Jan 19 • 02:30 | Pablo Carreño Busta | | - | | Gilles Müller | 3 | : | 1 |
| Jan 19 • 04:00 | Grigor Dimitrov | | - | | Andrey Rublev | 3 | : | 1 |
| Jan 19 • 04:00 | Andreas Seppi | | - | | Ivo Karlović | 3 | : | 2 |
| Jan 19 • 05:30 | Diego Schwartzman | | - | | Alexandr Dolgopolov | 3 | : | 1 |
| Jan 19 • 06:00 | Ryan Harrison | | - | | Marin Čilić | 0 | : | 3 |
| Jan 19 • 09:00 | Rafael Nadal | | - | | Damir Džumhur | 3 | : | 0 |
| Jan 19 • 09:00 | Nick Kyrgios | | - | | Jo-Wilfried Tsonga | 3 | : | 1 |
| Jan 20 • 02:30 | Alexander Zverev | | - | | Chung Hyeon | 2 | : | 3 |
| Jan 20 • 02:30 | Maximilian Marterer | | - | | Tennys Sandgren | 1 | : | 3 |
| Jan 20 • 04:00 | Dominic Thiem | | - | | Adrian Mannarino | 3 | : | 0 |
| Jan 20 • 04:00 | Julien Benneteau | | - | | Fabio Fognini | 2 | : | 3 |
| Jan 20 • 05:30 | Márton Fucsovics | | - | | Nicolás Kicker | 3 | : | 0 |
| Jan 20 • 07:00 | Juan Martín del Potro | | - | | Tomáš Berdych | 0 | : | 3 |
| Jan 20 • 09:00 | Novak Djokovic | | - | | Albert Ramos-Viñolas | 3 | : | 0 |
| Jan 20 • 10:00 | Roger Federer | | - | | Richard Gasquet | 3 | : | 0 |
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| Jan 21 • 02:30 | Pablo Carreño Busta | | - | | Marin Čilić | 1 | : | 3 |
| Jan 21 • 04:30 | Rafael Nadal | | - | | Diego Schwartzman | 3 | : | 1 |
| Jan 21 • 06:30 | Kyle Edmund | | - | | Andreas Seppi | 3 | : | 1 |
| Jan 21 • 09:00 | Grigor Dimitrov | | - | | Nick Kyrgios | 3 | : | 1 |
| Jan 22 • 02:30 | Fabio Fognini | | - | | Tomáš Berdych | 0 | : | 3 |
| Jan 22 • 05:00 | Márton Fucsovics | | - | | Roger Federer | 0 | : | 3 |
| Jan 22 • 06:00 | Dominic Thiem | | - | | Tennys Sandgren | 1 | : | 3 |
| Jan 22 • 09:00 | Novak Djokovic | | - | | Chung Hyeon | 0 | : | 3 |
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| Jan 23 • 04:30 | Grigor Dimitrov | | - | | Kyle Edmund | 1 | : | 3 |
| Jan 23 • 09:00 | Rafael Nadal | | - | | Marin Čilić | 2 | : | 2 |
| Jan 24 • 03:00 | Chung Hyeon | | - | | Tennys Sandgren | 3 | : | 0 |
| Jan 24 • 09:30 | Tomáš Berdych | | - | | Roger Federer | 0 | : | 3 |
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| Jan 25 • 09:30 | Marin Čilić | | - | | Kyle Edmund | 3 | : | 0 |
| Jan 26 • 09:30 | Chung Hyeon | | - | | Roger Federer | 0 | : | 1 |
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| Jan 28 • 09:30 | Marin Čilić | | - | | Roger Federer | 2 | : | 3 |
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