June 13, 2021

Top 38 Prospects: Seattle Mariners (FanGraphs)

Below is an analysis of the prospects in the farm system of the Seattle Mariners. Scouting reports are compiled with information provided by industry sources as well as my own observations. For more information on the 20-80 scouting scale by which all of our prospect content is governed, you can click here. For further explanation of the merits and drawbacks of Future Value, read this.

All of the numbered prospects here also appear on The Board, a resource the site offers featuring sortable scouting information for every organization. It can be found here.

Other Prospects of Note

Grouped by type and listed in order of preference within each category.

Arm Strength Relief Sorts
Yeury Tatiz, RHP
Dayeison Arias, RHP
Natanael Garabitos, LHP
Taylor Guilbeau, LHP

Tatiz almost made the main section of the list. He’s 19 and up to 95 with an average slider. Arias has performed as a pro, striking out 160 hitters in 116 pro frames. He’s consistently been in the 92-96 range as a lower-minors closer. He has an odd, swinging gate delivery that swivels about an axis created by a stiff front leg. If that’s not a long-term issue, then he’s a middle relief up/down type….

Read “Top 38 Prospects: Seattle Mariners” at FanGraphs