Jonathan Stiever

Position: RHSP
Level: Instructs
Affiliate: White Sox Instructs
League: Instructional League
Born: 05/12/1997 (Age: 26)
Height: 6'2"
Weight: 205
B/T: Right / Right
Acquired: 5th Rd., 2018 MLB First-Year Player Draft (CWS)

Prospect Spotlight


  • Well-proportioned, athletic, 6’2” frame with strength in lower half; high-waisted with broad shoulders. 
  • Repeats athletic semi-windup, limited effort; engages lower half, stays online, clean above-average arm speed from ¾ slot.
  • FB 91-95 (93); Locates well side-to-side with average sink and solid plane. Limited run, pitch is vulnerable up in zone; flashed ability to hit spots down in zone.
  • SL 84-87; Has bite in upper velo band; inconsistent ability to locate, spots it better at 84 but less action. 3rd pitch. 
  • CB 75-77. 12-6 shape lacking sharpness and consistent feel. Backed up, located well out of zone; cross up pitch max at MLB level.
  • CH 84-86; Deception off fastball with repetition of arm speed. Similar tunnel to FB with solid-average fade off edge of plate. Best secondary.  
  • Polished delivery and assertion with fastball in the zone. Projects to average control with progression of SL and CH quality.

SUMMARY: College arm with backend of  ingredients; has command and control for #5 SP ceiling. To get there, development of SL, both further tightening and better location, will be priority to pair with MLB average CH.