• Full name Jack William Ralston
  • Born 08/13/1997 in Panorama City, CA
  • Profile Ht.: 6'6" / Wt.: 231 / Bats: R / Throws: R
  • School UCLA
  • Drafted in the 7th round (215th overall) by the St. Louis Cardinals in 2019 (signed for $204,800).
    View Draft Report
    Ralston struggled to throw strikes most of his UCLA career and in the Cape Cod League last summer, but he figured out his 6-foot-6 body and windmill delivery this spring and emerged as the Bruins’ most reliable starter. Ralston’s over-the-top, explosive delivery makes at-bats uncomfortable for hitters and gives his pitches unique characteristics. His fastball sits 91-94 mph, and he holds his velocity deep into games. His biggest weapon is an overhand, high-spin curveball with depth that comes in at 80-82 mph. It’s a pitch that draws swings and misses by the bunch and rarely gets squared up, giving him a true out-pitch that will play at higher levels. Ralston mostly relies on his fastball and curveball. He does have a fringy but effective changeup. Evaluators largely see Ralston as a future reliever, with his curveball carrying him up the ladder.

Top Rankings

Draft Prospects

Scouting Reports

Career Transactions

  • Miami Marlins invited non-roster RHP Jack Ralston to spring training.
  • RHP Jack Ralston assigned to Jacksonville Jumbo Shrimp.
  • Miami Marlins signed free agent RHP Jack Ralston to a minor league contract.
  • RHP Jack Ralston elected free agency.
  • RHP Jack Ralston assigned to Memphis Redbirds from Springfield Cardinals.
  • RHP Jack Ralston assigned to Springfield Cardinals from Memphis Redbirds.
  • RHP Jack Ralston assigned to Memphis Redbirds from Springfield Cardinals.
  • Memphis Redbirds activated RHP Jack Ralston.
  • RHP Jack Ralston roster status changed by St. Louis Cardinals.
  • RHP Jack Ralston assigned to St. Louis Cardinals.
  • RHP Jack Ralston assigned to Springfield Cardinals from Peoria Chiefs.
  • RHP Jack Ralston assigned to Springfield Cardinals from Peoria Chiefs.
  • RHP Jack Ralston assigned to Peoria Chiefs from Springfield Cardinals.
  • RHP Jack Ralston assigned to Peoria Chiefs from Springfield Cardinals.
  • RHP Jack Ralston assigned to Springfield Cardinals.
  • RHP Jack Ralston assigned to Peoria Chiefs from Palm Beach Cardinals.
  • RHP Jack Ralston assigned to Palm Beach Cardinals from Peoria Chiefs.
  • Peoria Chiefs sent RHP Jack Ralston on a rehab assignment to Palm Beach Cardinals.
  • Peoria Chiefs sent RHP Jack Ralston on a rehab assignment to FCL Cardinals.
  • Peoria Chiefs placed RHP Jack Ralston on the 10-day injured list.
  • RHP Jack Ralston assigned to Peoria Chiefs from Palm Beach Cardinals.
  • Cardinals Organization activated RHP Jack Ralston. ABS test.
  • RHP Jack Ralston assigned to Palm Beach Cardinals.
  • RHP Jack Ralston assigned to Palm Beach Cardinals.
  • RHP Jack Ralston assigned to Peoria Chiefs.
  • RHP Jack Ralston assigned to Peoria Chiefs from State College Spikes.
  • RHP Jack Ralston assigned to State College Spikes.
  • St. Louis Cardinals signed LHP Jack Ralston.
  • LHP Jack Ralston assigned to UCLA Bruins.
  • LHP Jack Ralston assigned to UCLA Bruins.
  • LHP Jack Ralston assigned to UCLA Bruins.

Download our app

Read the newest magazine issue right on your phone