Nippon-Ham Fighters' slugger Franmil Reyes was substituted mid-game due to foot discomfort.
Manager Tsuyoshi Shinjo confirmed the issue relates to chronic left heel pain, labeling it as a minor concern.
Reyes had shown strong form, recording a hit in the third inning before being replaced by Yuki Nomura in the fifth.
The Fighters successfully defeated the Orix Buffaloes 6-0, marking their fourth consecutive victory of the season.