Bulgaria: Sofia - Singles - Main |
| Quarter-finals | Millman J. | Pospisil V. | 0:2 (3:6, 2:6) | details | 12.11.2020 |
| 1/8-finals | Millman J. | Simon G. | 2:1 (7:5, 63:7, 6:2) | details | 11.11.2020 |
| 1/16-finals | Millman J. | Andreev A. | 2:0 (6:3, 6:1) | details | 08.11.2020 |
France: Paris - Singles - Main |
| 1/32-finals | Kecmanovic M. | Millman J. | 2:0 (6:4, 6:2) | details | 03.11.2020 |
Kazakhstan: Nur-Sultan - Singles - Main |
| Final | Mannarino A. | Millman J. | 0:2 (5:7, 1:6) | details | 01.11.2020 |
| Semi-finals | Millman J. | Tiafoe F. | 2:1 (3:6, 6:4, 6:4) | details | 31.10.2020 |
| Quarter-finals | Paul T. | Millman J. | 1:2 (7:65, 4:6, 65:7) | details | 30.10.2020 |
| 1/8-finals | Verdasco F. | Millman J. | 0:2 (3:6, 4:6) | details | 28.10.2020 |
Germany: Cologne 2 - Singles - Main |
| 1/8-finals | Zverev A. | Millman J. | 2:1 (6:0, 3:6, 6:3) | details | 21.10.2020 |
| 1/16-finals | Verdasco F. | Millman J. | 0:2 (4:6, 2:6) | details | 20.10.2020 |
Germany: Cologne - Singles - Main |
| 1/16-finals | Millman J. | Zverev M. | 0:2 (1:6, 4:6) | details | 12.10.2020 |
France: French Open - Singles - Main |
| 1/64-finals | Millman J. | Carreno-Busta P. | 0:3 (3:6, 2:6, 5:7) | details | 28.09.2020 |
Italy: Rome - Singles - Main |
| 1/16-finals | Schwartzman D. | Millman J. | 2:0 (6:4, 7:61) | details | 17.09.2020 |
| 1/32-finals | Sousa J. | Millman J. | 0:2 (5:7, 62:7) | details | 15.09.2020 |
Austria: Kitzbuhel - Singles - Main |
| 1/16-finals | Thompson J. | Millman J. | 2:1 (6:3, 4:6, 7:62) | details | 09.09.2020 |
USA: US Open - Singles - Main |
| 1/32-finals | Tiafoe F. | Millman J. | 3:2 (7:66, 3:6, 1:6, 6:3, 6:3) | details | 03.09.2020 |
| 1/64-finals | Millman J. | Basilashvili N. | 3:0 (6:1, 6:4, 6:4) | details | 02.09.2020 |
USA: Cincinnati - Singles - Main |
| 1/16-finals | Isner J. | Millman J. | 2:1 (4:6, 7:63, 7:65) | details | 24.08.2020 |
| 1/32-finals | Mannarino A. | Millman J. | 1:2 (6:4, 4:6, 62:7) | details | 23.08.2020 |
World: Davis Cup - World Group - Singles - Qualification |
| | Millman J. | Monteiro T. | 2:1 (66:7, 7:63, 7:63) | details | 07.03.2020 |
| | Millman J. | Seyboth Wild T. | 2:1 (4:6, 7:60, 6:2) | details | 06.03.2020 |
Mexico: Acapulco - Singles - Main |
| 1/16-finals | Fritz T. | Millman J. | 2:1 (7:5, 3:6, 6:1) | details | 26.02.2020 |
USA: Delray Beach - Singles - Main |
| 1/16-finals | Nishioka Y. | Millman J. | 2:1 (3:6, 6:4, 6:2) | details | 18.02.2020 |
Australia: Australian Open - Singles - Main |
| 1/16-finals | Millman J. | Federer R. | 2:3 (6:4, 62:7, 4:6, 6:4, 68:7) | details | 24.01.2020 |
| 1/32-finals | Hurkacz H. | Millman J. | 0:3 (4:6, 5:7, 3:6) | details | 22.01.2020 |
| 1/64-finals | Millman J. | Humbert U. | 3:1 (7:63, 6:3, 1:6, 7:5) | details | 21.01.2020 |
New Zealand: Auckland - Singles - Main |
| Quarter-finals | Millman J. | Paire B. | 1:2 (6:3, 1:6, 4:6) | details | 16.01.2020 |
| 1/8-finals | Khachanov K. | Millman J. | 1:2 (6:4, 3:6, 3:6) | details | 15.01.2020 |
| 1/16-finals | Mmoh M. | Millman J. | 0:2 (65:7, 4:6) | details | 14.01.2020 |
Australia: ATP Cup - Singles - Main |
| | Pervolarakis M. | Millman J. | 1:2 (6:4, 1:6, 61:7) | details | 07.01.2020 |
| | Auger-Aliassime F. | Millman J. | 0:2 (4:6, 2:6) | details | 05.01.2020 |
World: Davis Cup - World Group - Singles - Play Offs |
| | Millman J. | Pospisil V. | 0:2 (67:7, 4:6) | details | 21.11.2019 |
France: Paris - Singles - Qualification |
| Semi-finals | Millman J. | Berankis R. | 0:2 (2:6, 61:7) | details | 26.10.2019 |
Sweden: Stockholm - Singles - Main |
| 1/16-finals | Carreno-Busta P. | Millman J. | 2:0 (6:4, 6:3) | details | 15.10.2019 |
China: Shanghai - Singles - Main |
| 1/16-finals | Millman J. | Rublev A. | 0:2 (2:6, 0:6) | details | 09.10.2019 |
| 1/32-finals | Pella G. | Millman J. | 0:2 (3:6, 5:7) | details | 08.10.2019 |
Japan: Tokyo - Singles - Main |
| Final | Djokovic N. | Millman J. | 2:0 (6:3, 6:2) | details | 06.10.2019 |
| Semi-finals | Opelka R. | Millman J. | 0:2 (3:6, 64:7) | details | 05.10.2019 |
| Quarter-finals | Millman J. | Daniel T. | 2:0 (6:4, 6:0) | details | 04.10.2019 |
| 1/8-finals | Harris G. | Millman J. | 0:2 (3:6, 2:6) | details | 03.10.2019 |
| 1/16-finals | Millman J. | Mannarino A. | 2:1 (4:6, 6:3, 6:4) | details | 02.10.2019 |
China: Zhuhai - Singles - Main |
| 1/16-finals | De Minaur A. | Millman J. | 2:0 (6:1, 6:3) | details | 24.09.2019 |
Taiwan: Kaohsiung - Singles - Main |
| Final | Polmans M. | Millman J. | 0:2 (4:6, 2:6) | details | 22.09.2019 |