Singapore 2021 ATP
Final
| Winner | Loser | Score | |
|---|---|---|---|
| Alexei Popyrin | d. | Alexander Bublik | 4-6 6-0 6-2 |
Semifinals
| Winner | Loser | Score | |
|---|---|---|---|
| Alexei Popyrin | d. | Marin Cilic | 7-6(5) 7-6(2) |
| Alexander Bublik | d. | Radu Albot | 2-6 6-3 6-4 |
Quarterfinals
| Winner | Loser | Score | |
|---|---|---|---|
| Alexei Popyrin | d. | Matthew Ebden | 6-4 7-6(7) |
| Marin Cilic | d. | Soon Woo Kwon | 6-2 2-6 7-5 |
| Alexander Bublik | d. | Yoshihito Nishioka | 6-3 6-2 |
| Radu Albot | d. | Adrian Mannarino | 6-3 6-4 |
Round of 16
| Winner | Loser | Score | |
|---|---|---|---|
| Matthew Ebden | d. | John Millman | 6-4 6-1 |
| Alexei Popyrin | d. | Adrian Andreev | 6-1 5-7 6-3 |
| Marin Cilic | d. | Taro Daniel | 7-5 6-4 |
| Soon Woo Kwon | d. | Yasutaka Uchiyama | 6-3 6-4 |
| Yoshihito Nishioka | d. | Maxime Cressy | 6-4 6-2 |
| Alexander Bublik | d. | Altug Celikbilek | 6-2 6-2 |
| Radu Albot | d. | Yannick Hanfmann | 6-7(2) 7-6(7) 6-3 |
| Adrian Mannarino | d. | Roberto Marcora | 6-3 7-5 |
Round of 32
| Winner | Loser | Score | |
|---|---|---|---|
| Matthew Ebden | d. | Yuki Bhambri | 6-3 7-6(3) |
| Alexei Popyrin | d. | Christopher Eubanks | 7-6(5) 7-6(5) |
| Adrian Andreev | d. | Lloyd Harris | 1-6 6-3 6-4 |
| Taro Daniel | d. | Ramkumar Ramanathan | 6-3 6-7(3) 6-3 |
| Yasutaka Uchiyama | d. | Marc Polmans | 6-4 2-6 6-4 |
| Soon Woo Kwon | d. | Thai Son Kwiatkowski | 4-6 6-3 6-4 |
| Yoshihito Nishioka | d. | Michael Mmoh | 6-2 3-6 6-3 |
| Maxime Cressy | d. | Jason Jung | 7-6(4) 6-2 |
| Altug Celikbilek | d. | Shintaro Mochizuki | 6-0 6-4 |
| Radu Albot | d. | John Patrick Smith | 6-2 3-6 6-1 |
| Yannick Hanfmann | d. | James Duckworth | 6-2 6-4 |
| Roberto Marcora | d. | Ernests Gulbis | 7-5 6-4 |
Qualifying round 2
| Winner | Loser | Score | |
|---|---|---|---|
| John Patrick Smith | d. | Malek Jaziri | 7-5 7-6(5) |
| Christopher Eubanks | d. | Alessandro Bega | 6-1 6-2 |
| Altug Celikbilek | d. | Matteo Viola | 6-2 0-6 7-6(5) |
| Thai Son Kwiatkowski | d. | Robert Galloway | 6-2 6-3 |
Qualifying round 1
| Winner | Loser | Score | |
|---|---|---|---|
| John Patrick Smith | d. | Roy Hobbs | 6-1 6-1 |
| Malek Jaziri | d. | Shaheed Alam | 6-1 6-3 |
| Alessandro Bega | d. | Fabrizio Ornago | 7-5 6-2 |
| Christopher Eubanks | d. | Rohan Bopanna | 6-3 6-4 |
| Altug Celikbilek | d. | Evan King | 6-2 6-4 |
| Matteo Viola | d. | Alex Lawson | 6-3 6-2 |
| Robert Galloway | d. | Vladyslav Orlov | 6-4 6-4 |
| Thai Son Kwiatkowski | d. | Luke Bambridge | 6-4 7-6(4) |
Data: Jeff Sackmann / Tennis Abstract — CC BY-NC-SA 4.0