Seattle Mariners
Development Update |  | | Saturday, September 23rd, 2028 | | Starting Pitcher B. Burns (High Desert Mavericks, Single A) pitching potential DROPS. |
| Friday, September 8th, 2028 | | Starting Pitcher M. David (High Desert Mavericks, Single A) pitching potential DROPS. |
| Saturday, September 2nd, 2028 | | Second Base B. Ball (High Desert Mavericks, Single A) hitting potential DROPS. |
| Thursday, August 24th, 2028 | | Reliever J. Morales (High Desert Mavericks, Single A) pitching potential INCREASES. |
| Friday, August 18th, 2028 | | Starting Pitcher N. Scott (West Tenn Diamond Jaxx, Double A) pitching potential INCREASES. |
| Thursday, August 17th, 2028 | | Reliever A. Cade (West Tenn Diamond Jaxx, Double A) pitching potential DROPS. |
| Thursday, August 10th, 2028 | | Reliever J. Morales (High Desert Mavericks, Single A) pitching potential DROPS. |
| Sunday, July 30th, 2028 | | Designated Hitter P. Medina hitting potential DROPS. | | Reliever A. Vandenbrucke pitching potential DROPS. |
| Saturday, July 22nd, 2028 | | Right Field K. Haines (High Desert Mavericks, Single A) hitting potential DROPS. |
| Saturday, July 15th, 2028 | | First Base L. Baca (High Desert Mavericks, Single A) hitting potential INCREASES. |
| Saturday, July 1st, 2028 | | Starting Pitcher N. Valdéz (High Desert Mavericks, Single A) pitching potential INCREASES. | | Right Field A. Boyce (High Desert Mavericks, Single A) hitting potential DROPS. |
| Friday, June 23rd, 2028 | | Starting Pitcher N. Scott (West Tenn Diamond Jaxx, Double A) pitching potential INCREASES. |
| Thursday, June 8th, 2028 | | Reliever A. Cade (West Tenn Diamond Jaxx, Double A) pitching potential DROPS. |
| Saturday, June 3rd, 2028 | | Starting Pitcher F. Medina (High Desert Mavericks, Single A) pitching potential INCREASES. |
| Friday, June 2nd, 2028 | | Starting Pitcher N. Scott (High Desert Mavericks, Single A) pitching potential DROPS. |
| Thursday, May 25th, 2028 | | Starting Pitcher E. López (Tacoma Rainiers, Triple A) pitching potential DROPS. |
| Thursday, May 11th, 2028 | | Center Field J. Bridges (West Tenn Diamond Jaxx, Double A) hitting potential DROPS. | | Starting Pitcher J. Rodríguez (Tacoma Rainiers, Triple A) pitching potential DROPS. |
| Thursday, April 20th, 2028 | | Starting Pitcher L. García (West Tenn Diamond Jaxx, Double A) pitching potential DROPS. |
| Wednesday, April 19th, 2028 | | First Base L. Hamer (High Desert Mavericks, Single A) hitting potential INCREASES. |
| Thursday, April 6th, 2028 | | Starting Pitcher J. Rodríguez (Tacoma Rainiers, Triple A) pitching potential INCREASES. |
| Thursday, March 30th, 2028 | | Catcher A. Austin (High Desert Mavericks, Single A) hitting potential DROPS. |
| Wednesday, March 29th, 2028 | | Reliever Y. Kumatani (West Tenn Diamond Jaxx, Double A) pitching potential INCREASES. |
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