General Statistics - Lock, Courtney John
1222
Rank
10 - 22
Wins-Losses
1222 (2022)
Highest ranking
General Statistics - Nijboer, Ryan
757
Rank
46 - 46
Wins-Losses
390 (2024)
Highest ranking
Ranking - Lock, Courtney John
| Year | Ranking | Summary | Clay | Hardcourt | Indoor | Grass | Other |
|---|---|---|---|---|---|---|---|
| 2025 | - | 0/2 | 0/1 | 0/1 | - | - | - |
| 2024 | 2065 | 2/12 | 1/6 | 0/4 | - | - | 1/2 |
| 2023 | - | 1/3 | - | 1/1 | - | - | 0/2 |
| 2022 | 1222 | 5/11 | 4/6 | 1/4 | - | - | 0/1 |
| 2020 | 1316 | 0/4 | 0/2 | 0/2 | - | - | - |
| 2019 | 1297 | 8/17 | - | 8/17 | - | - | - |
| 2018 | 1337 | 14/16 | - | 14/16 | - | - | - |
| 2017 | - | 1/4 | 1/2 | 0/2 | - | - | - |
| 2016 | 1581 | 3/12 | 0/1 | 3/9 | - | - | 0/2 |
| 2015 | 2147 | 2/7 | - | 2/7 | - | - | - |
| 2014 | - | 1/2 | - | 1/2 | - | - | - |
| Summary | 37/90 | 6/18 | 30/65 | 0/0 | 0/0 | 1/7 |
Ranking - Nijboer, Ryan
| Year | Ranking | Summary | Clay | Hardcourt | Indoor | Grass | Other |
|---|---|---|---|---|---|---|---|
| 2026 | - | 2/2 | - | - | 2/2 | - | - |
| 2025 | 510 | 13/17 | 9/11 | 0/1 | 4/5 | - | - |
| 2024 | 390 | 53/37 | 45/32 | 8/3 | 0/2 | - | - |
| 2023 | - | 55/33 | 41/21 | 12/9 | 2/3 | - | - |
| 2022 | 757 | 23/23 | 22/17 | 1/6 | - | - | - |
| 2021 | 681 | 27/28 | 18/13 | 9/13 | 0/2 | - | - |
| 2020 | 703 | 21/17 | 5/7 | 13/7 | 3/3 | - | - |
| 2019 | 613 | 23/21 | 13/9 | 8/7 | 2/5 | - | - |
| 2018 | 670 | 32/24 | 11/14 | 21/10 | - | - | - |
| 2017 | 919 | 18/7 | - | 18/7 | - | - | - |
| 2016 | - | 3/2 | - | 3/2 | - | - | - |
| Summary | 270/211 | 164/124 | 93/65 | 13/22 | 0/0 | 0/0 |
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