D-Backs Prospect Kyle Amendt Has an Over-the-Top Trebuchet Arm Action

When our Arizona Diamondbacks Top Prospects list was published in December, Eric Longenhagen described 24-year-old Kyle Amendt as “a late-blooming illusionist righty with a cut/rise fastball and a deceptive delivery.” Our lead prospect analyst went on to say that the physically imposing 6-foot-5, 255-pound hurler had “a 15% swinging strike rate in 2024, among the best in the org, even though his fastball sits just 88-92 mph.” Not fully sold on the total package — command is among the concerns — Eric assigned Amendt a 35+ FV.
His unorthodox style of pitching and minor league numbers nonetheless suggest a future role in a big league bullpen. Along with the aforementioned 15% swinging strike rate, the 2023 ninth-round pick out of Dallas Baptist University logged a 2.86 ERA, a 2.38 FIP, and a 40.3 K% over 44 innings across High-A, Double-A, and Triple-A. And his delivery is indeed unique. Eric called it “over-the-top trebuchet arm action,” adding that Amendt “hides the ball forever.”
Currently a non-roster invitee at D-backs camp, Amendt discussed his delivery and three-pitch arsenal during the Arizona Fall League season.
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David Laurila: I’ve heard that you have an unorthodox delivery. How would you describe it?
Kyle Amendt: “Like a high left-handed slot as a righty. My curveball is a left-handed curveball, and my fastball is anywhere from an 11:45 to a 12-[o’clock] tilt. Everything looks like it’s coming from directly over my head.”
Laurila: What is story behind your delivery? Read the rest of this entry »