| Date | Player | Milestones | |
| 08/14/1908 | Henry Mason | 300 Home Runs, while playing for Oakland | |
| 07/17/1914 | Ike Eklund | 300 Home Runs, while playing for Oakland | |
| 08/08/1915 | Jack Tuttle | 2000 Strikeouts, while playing for Portland | |
| 06/03/1916 | John Simms | 2000 Strikeouts, while playing for Portland | |
| 06/23/1917 | Jack Tuttle | 2500 Strikeouts, while playing for Portland | |
| 08/14/1917 | Sim Hay | 300 Home Runs, while playing for Portland | |
| 06/20/1918 | Walt Prevatt | 300 Home Runs, while playing for Portland | |
| 08/22/1920 | Mule Stevens | 1000 Runs Scored, while playing for Sacramento | |
| 07/24/1921 | Mule Stevens | 1000 Runs Batted In, while playing for Sacramento | |
| 09/14/1922 | Mule Stevens | 2000 Hits, while playing for Sacramento | |
| 05/21/1931 | Turk Leach | 1000 Runs Scored, while playing for San Diego | |
| 06/11/1932 | Turk Leach | 2000 Hits, while playing for San Diego | |
| 05/14/1944 | Jim Aban | 1000 Runs Scored, while playing for Seattle | |
| 09/05/1944 | Jim Aban | 2000 Hits, while playing for Seattle | |
| 05/31/1945 | Earl Hillard | 1000 Runs Scored, while playing for Seattle | |
