Concussion Risks in Baseball
Despite being a non-contact sport, baseball presents significant concussion risks from 150+ km/h hit-by-pitches to the head, home plate collisions, outfielder fence impacts, and line drives hitting pitchers. NPB reports dozens annually, with mild cases likely underreported.
NPB Concussion Protocol
Introduced in 2017, NPB's protocol mandates immediate removal and medical evaluation for suspected concussions. Diagnosed players follow graduated return-to-play programs and cannot compete until symptom-free. Special substitution rules for concussed players reduce pressure to keep injured players in games.
Home Plate Collision Rules
NPB adopted collision rules in 2016, following MLB's 2014 lead, prohibiting catchers from blocking the plate and runners from targeting catchers. Previously celebrated as displays of fighting spirit, these collisions caused numerous catcher concussions and fractures before safety was prioritized.
Ongoing Challenges
Long-term concerns include potential CTE from repeated subconcussive impacts, as documented in American football. Remaining challenges include detecting mild concussions, players concealing symptoms, and return-timing decisions. Building a safety-first culture alongside medical protocols remains essential.