| French Open |
Round |
Result |
H |
A |
| 19.05. |
|
Martinez P. - Sakamoto R. |
Q-1R |
6-2, 7-5 |
2.01 |
1.75 |
| Bordeaux challenger |
Round |
Result |
H |
A |
| 14.05. |
|
Molcan A. - Sakamoto R. |
R16 |
6-4, 6-0 |
1.37 |
2.91 |
| 13.05. |
|
Sakamoto R. - Muller A. |
1R |
6-4, 3-6, 6-3 |
2.24 |
1.60 |
| 12.05. |
|
Sakamoto R. - Tseng C. |
Q-QF |
7-5, 6-1 |
2.29 |
1.56 |
| 11.05. |
|
Sakamoto R. - Martineau M. |
Q-R16 |
64-7, 6-2, 7-65 |
1.36 |
2.96 |
| Cagliari challenger |
Round |
Result |
H |
A |
| 28.04. |
|
Sakamoto R. - Seggerman R. |
Q-QF |
7-5, 61-7, 7-66 |
1.08 |
6.95 |
| 27.04. |
|
Sakamoto R. - Porcu N. |
Q-R16 |
6-2, 7-62 |
1.01 |
17.00 |
| Madrid |
Round |
Result |
H |
A |
| 21.04. |
|
Gaubas V. - Sakamoto R. |
Q-2R |
7-65, 65-7, 7-64 |
1.94 |
1.81 |
| 20.04. |
|
Sakamoto R. - Svajda Z. |
Q-1R |
7-69, 6-1 |
1.58 |
2.30 |
| Oeiras challenger |
Round |
Result |
H |
A |
| 16.04. |
|
Rocha H. - Sakamoto R. |
R16 |
7-67, 7-64 |
1.56 |
2.33 |
| 14.04. |
|
Sakamoto R. - Moro Canas A. |
1R |
6-4, 6-4 |
1.86 |
1.84 |
| Monza challenger |
Round |
Result |
H |
A |
| 08.04. |
|
Van Assche L. - Sakamoto R. |
R16 |
6-3, 7-5 |
1.35 |
3.02 |
| 06.04. |
|
Sakamoto R. - Carballes Baena R. |
1R |
6-4, 6-3 |
2.32 |
1.56 |
| Marrakech |
Round |
Result |
H |
A |
| 30.03. |
|
Trungelliti M. - Sakamoto R. |
Q-QF |
7-68, 6-4 |
1.53 |
2.42 |
| 29.03. |
|
Sakamoto R. - Jamji A. |
Q-R16 |
6-4, 6-2 |
1.01 |
21.58 |
| 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 |