Japanese Professional Baseball

NPB Player Movement Database

Curated English profiles and affiliation histories.

日本語

Back to the English index

Kazuki Sugiyama

杉山 一樹

Profile

Japanese name杉山 一樹
ReadingNot registered
PositionPitcher
Bats / throwsThrows right / Bats right
TeamsFukuoka SoftBank Hawks

Career summary

Kazuki Sugiyama is what scouts mean when they say the word "frame": 192 centimeters, 106 kilograms, and a fastball that sits in the upper 150s from a delivery that seems to arrive from somewhere above the scoreboard. He took the industrial route to Fukuoka — a corporate-league stint at Mitsubishi Heavy Industries Hiroshima before the 2018 draft — and after years as a live arm without a job description, he seized the closer's role for the Hawks team that won it all in 2025.

He is also, famously, his own harshest critic. Last April, furious at one bad outing, he punched a dugout bench and broke his own left hand — a month-long lesson in the cost of caring too much, after which he returned to the late innings as if nothing had happened. That intensity, attached to that fastball, is exactly the profile MLB bullpens spend every winter shopping for. His stated goal for 2026 is an ERA that starts with zero. He does not appear to be joking.

Affiliation history

19~25 NPB Fukuoka SoftBank Hawks Joined

Official sources

  • NPB all-time player register
  • NPB player profile and career statistics
  • NPB 2018 Draft