Heading into the 2025 season, the Mariners were seen as having one of the best farm systems in baseball. They have since managed to place nine players in MLB Pipeline's Top 100 prospect list thanks to a solid draft strategy and great player development infrastructure.
While the big league team is just getting started, the minor league seasons are starting to wrap up. With a full year of results to look back on, we can try and anticipate who'll continue moving up through the ranks and who has some more work to do.