August 18-24, 2026

Jack Ralston (RHP, Miami Marlins)

The players covered in this column are only those who still have rookie status as determined by MLB, and who have not already been written up earlier in 2026. Find previous Call-up profiles on the Content tab of the player's PlayerLink page. 

Contributing writers: Chris Blessing, Matt Cederholm, Nick Richards, Mark Sherrard, and Matthew St-Germain
 

August 24, 2026

Jack Ralston (RHP, Miami Marlins)
The Marlins have called up 29-year-old Ralston, a career minor-league reliever, for his major league debut, designating lefty John King to open the spot. Ralston put up a 1.66 ERA with a 31.1% strikeout rate over 59.2 innings at Triple-A Jacksonville this year. While that seems dominant, his FIP was 3.40 and his...

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