Kazuki Sugiyama
杉山 一樹
Profile
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.