| Jos Tipker's Progress for 3 ball backcrosses | |||
|---|---|---|---|
| Duration | Date | Notes | |
| 33c | 2022-02-07 | - | |
| 30c | 2022-01-26 | - | |
| 23c | 2021-12-29 | - | |
| 20c | 2021-12-28 | - | |
| 18c | 2021-12-17 | - | |
| 14c | 2021-12-16 | - | |
| 12c | 2021-12-10 | - | |
| 9c | 2021-08-04 | - | |
| 8c | 2021-05-12 | - | |
| 7c | 2021-05-10 | - | |
| 6c | 2021-05-06 | - | |
| 5c | 2021-04-19 | - | |