The Miami Marlins have signed right-hander Jack Ralston to a minor league deal. It only appeared on Miami’s transaction log this weekend, but Ralston joined the organization officially back on December 16.
Ralston was drafted by the St. Louis Cardinals out of UCLA in 2019 and has spent his entire professional career with them until now. Although successful as a starter during his draft year, the seventh-rounder was quickly converted to a reliever. Last season, all 38 of his appearances came out of the bullpen. Splitting time between Double-A and Triple-A, he posted a 3.61 ERA, 28.0 K% and .248 BAA in 57 ⅓ innings pitched. His sky-high 16.7% walk rate held him back from earning a call-up. The Cardinals also declined to select him to their 40-man roster after the season, so he departed as a minor league free agent.
Based on 14 innings of Triple-A data, Ralston’s fastball averages 93.4 mph. His go-to secondary pitch is a low-80s splitter. The 6’6″ righty also has a cutter and a slider in his arsenal.
At the age of 28 with such recent experience at the AAA level, Ralston is almost assured of attending big league spring training as a non-roster invitee, but Fish On First is unable to confirm that at the moment.
In addition to Ralston, the Marlins have also signed Jesús Bastidas, Evan McKendry, Brian Navarreto, Samuel Vásquez and Tyler Zuber to minor league deals this offseason.