| Shanghai |
Round |
Result |
H |
A |
| 07.10. |
|
Sakamoto R. - Trungelliti M. |
1R |
6-3, 7-5 |
1.45 |
2.71 |
| 06.10. |
|
Sakamoto R. - Jacquet K. |
Q-2R |
7-66, 4-6, 7-68 |
2.16 |
1.66 |
| 05.10. |
|
Sakamoto R. - Hong S. |
Q-1R |
6-3, 7-5 |
1.25 |
3.77 |
| Tokyo (Japan Open) |
Round |
Result |
H |
A |
| 30.09. |
|
Arnaldi M. - Sakamoto R. |
1R |
2-6, 6-4, 6-4 |
2.17 |
1.68 |
| Shanghai challenger |
Round |
Result |
H |
A |
| 08.09. |
|
Nam J. - Sakamoto R. |
1R |
7-63, 6-4 |
8.54 |
1.06 |
| US Open |
Round |
Result |
H |
A |
| 03.09. |
|
Tiafoe F. - Sakamoto R. |
2R |
6-3, 7-62, 7-5 |
1.25 |
3.99 |
| 31.08. |
|
Sakamoto R. - Vukic A. |
1R |
6-4, 65-7, 6-4, 3-6, 6-4 |
1.63 |
2.28 |
| 28.08. |
|
Sakamoto R. - Nishikori K. |
Q-3R |
6-4, 7-63 |
1.57 |
2.33 |
| 26.08. |
|
Sakamoto R. - Muller A. |
Q-2R |
6-3, 6-3 |
1.50 |
2.52 |
| 25.08. |
|
Sakamoto R. - Clarke J. |
Q-1R |
4-6, 6-3, 6-4 |
1.26 |
3.73 |
| Quebec City challenger |
Round |
Result |
H |
A |
| 20.08. |
|
Van Assche L. - Sakamoto R. |
R16 |
4-6, 6-4, 7-63 |
1.54 |
2.36 |
| 18.08. |
|
Sakamoto R. - Rodionov J. |
1R |
6-1, 6-4 |
1.72 |
2.04 |
| Brownsburg challenger |
Round |
Result |
H |
A |
| 14.08. |
|
Milavsky D. - Sakamoto R. |
QF |
6-3, 6-3 |
2.89 |
1.38 |
| 13.08. |
|
Sakamoto R. - Suresh D. |
R16 |
7-5, 6-3 |
1.59 |
2.24 |
| 13.08. |
|
Sakamoto R. - Blanchet U. |
1R |
63-7, 7-66, 7-63 |
1.24 |
3.84 |
| Lexington challenger |
Round |
Result |
H |
A |
| 07.08. |
|
Butvilas E. - Sakamoto R. |
QF |
7-65, 3-6, 7-5 |
2.11 |
1.67 |
| 06.08. |
|
Sakamoto R. - Mmoh M. |
R16 |
6-4, 6-4 |
1.81 |
1.91 |
| 04.08. |
|
Sakamoto R. - Mayo A. |
1R |
7-63, 7-5 |
1.69 |
2.08 |
| Cary challenger |
Round |
Result |
H |
A |
| 02.07. |
|
Legout T. - Sakamoto R. |
R16 |
6-4, 6-3 |
4.38 |
1.19 |
| 01.07. |
|
Sakamoto R. - Leroux J. |
1R |
6-3, 63-7, 6-2 |
1.05 |
8.98 |
| Miami |
Round |
Result |
H |
A |
| 21.03. |
|
Medvedev D. - Sakamoto R. |
2R |
610-7, 6-3, 6-1 |
1.06 |
9.26 |
| 20.03. |
|
Sakamoto R. - Kovacevic A. |
1R |
6-4, 3-6, 7-67 |
2.41 |
1.56 |
| Cap Cana challenger |
Round |
Result |
H |
A |
| 10.03. |
|
Van Assche L. - Sakamoto R. |
Q-QF |
7-64, 6-3 |
1.75 |
1.98 |
| 10.03. |
|
Sakamoto R. - Draxl L. |
Q-R16 |
6-3, 7-5 |
1.47 |
2.53 |
| Indian Wells |
Round |
Result |
H |
A |
| 03.03. |
|
Kopriva V. - Sakamoto R. |
Q-1R |
6-4, 7-66 |
2.05 |
1.73 |
| New Delhi challenger |
Round |
Result |
H |
A |
| 21.02. |
|
Crawford O. - Sakamoto R. |
SF |
6-4, 6-3 |
3.99 |
1.22 |
| 20.02. |
|
Sakamoto R. - Cina F. |
QF |
67-7, 6-3, 6-2 |
1.58 |
2.26 |
| 19.02. |
|
Sakamoto R. - Gray A. |
R16 |
1-6, 6-1, 6-4 |
1.25 |
3.74 |
| 17.02. |
|
Sakamoto R. - Silva F. |
1R |
6-2, 6-2 |
1.49 |
2.52 |
| Brisbane 3 challenger |
Round |
Result |
H |
A |
| 14.02. |
|
Zhang Z. - Sakamoto R. |
SF |
6-1, 6-4 |
1.92 |
1.81 |
| 13.02. |
|
Sakamoto R. - Tu L. |
QF |
7-63, 6-4 |
1.31 |
3.31 |
| 12.02. |
|
Sakamoto R. - Sinclair C. |
R16 |
7-5, 6-3 |
1.03 |
11.04 |
| 10.02. |
|
Sakamoto R. - Mochizuki Y. |
1R |
6-0, 6-1 |
1.06 |
8.48 |
| Brisbane challenger |
Round |
Result |
H |
A |
| 06.02. |
|
Schoolkate T. - Sakamoto R. |
QF |
6-3, 6-4 |
2.27 |
1.59 |
| 04.02. |
|
Sakamoto R. - Daniel T. |
R16 |
7-65, 6-2 |
1.32 |
3.19 |
| 02.02. |
|
Sakamoto R. - Sekulic P. |
1R |
6-3, 6-4 |
1.20 |
4.37 |
| Australian Open |
Round |
Result |
H |
A |
| 20.01. |
|
Jodar R. - Sakamoto R. |
1R |
7-66, 6-1, 5-7, 4-6, 6-3 |
1.39 |
2.97 |
| 15.01. |
|
Sakamoto R. - Zeppieri G. |
Q-3R |
6-2, 6-2 |
1.95 |
1.81 |
| 14.01. |
|
Sakamoto R. - Smith C. |
Q-2R |
6-4, 6-4 |
1.75 |
2.03 |
| 12.01. |
|
Sakamoto R. - Evans D. |
Q-1R |
6-1, 6-2 |
1.45 |
2.67 |
| Hong Kong ATP |
Round |
Result |
H |
A |
| 06.01. |
|
Sonego L. - Sakamoto R. |
1R |
6-2, 7-64 |
1.46 |
2.67 |