Baseball Things

Baseball Things

Mariners Projected 2029 Roster: Lineup, Rotation, Bullpen, Bench

Let's take a look into the future.

Jason A. Churchill's avatar
Jason A. Churchill
Feb 21, 2026
∙ Paid
2026 Top 50 Mariners Prospects

2026 Top 50 Mariners Prospects

Jason A. Churchill
·
Feb 16
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In this exercise, we project three years into the future to piece together a roster. But there’s a catch: No trade acquisitions, free agent signings, or contract extensions allowed. This is what the roster might look like if the club simply let everything play out for 2029.

To illustrate how much it can change from year to year, here’s the projection from last year.

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