Twenty-seven current NPB pitchers benchmarked against the last decade of Japanese arms who made the jump — and exactly how their numbers moved once they got there.
Every pitcher here is still active in Japan. Sort the ledger by any column, or search by name and team. Rows expand for scouting notes and MLB player comps where noted.
| Pitcher | Role | IP | ERA | FIP | K/9 | BB/9 | K/BB | WHIP | xFIP | CSW% |
|---|
Each pitcher's final two NPB seasons stacked against their current MLB line. The arrow shows direction; red means the number moved the wrong way for a pitcher, green means it improved.
Averaged across all ten pitchers, this is what changes — and by how much — when a NPB arm faces MLB hitting. Bars point toward the league where each pitcher's number was better.
These are the cutoffs used to mark a stat as meeting an elite threshold on the Watchlist tab.