The Seattle Mariners should keep shortstop J.P. Crawford, the 2020 Gold Glove winner who ranks third among shortstops in Defensive Runs Saved since the start of the 2020 season:
https://www.fangraphs.com/leaders.aspx?pos=ss&stats=fld&lg=all&qual=y&type=1&season=2021&month=0&season1=2020&ind=0&team=0&rost=0&age=0&filter=&players=0&startdate=2020-01-01&enddate=2021-12-31&sort=13,d
Crawford remains under team control for three more arbitration seasons working off his current Super Two salary of $2.05 million. So far this season Crawford has posted 2.4 fWAR, valued at $19 million.
https://www.fangraphs.com/players/jp-crawford/15491/stats?position=SS#value
Noelvi Marte, Seattle's 19-year-old shortstop prospect, is currently the 11th-ranked overall prospect at MLB.com:
Top 100 Baseball Prospects | MLB.com
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