Pre-Closer Era
Before NPB established the closer role, reliever usage was fluid. Through the 1970s, starter complete games were standard, with relievers positioned as unable-to-start pitchers. The turning point was Enatsu's 21 Pitches in the 1979 Japan Series. Hiroshima reliever Enatsu's 21-pitch survival against Kintetsu's rally demonstrated reliever value nationwide, germinating NPB's closer concept.
Sasaki's Establishment
Kazuhiro Sasaki (Yokohama) established NPB's closer position in the 1990s. His 1998 season of 45 saves and 0.64 ERA powered Yokohama's championship. Sasaki's success cemented the 9th-inning-belongs-to-the-closer tactic. Post-Sasaki, specialist closers Iwase (Chunichi), Fujikawa (Hanshin), and Mahara (SoftBank) emerged across teams, with closer salaries rising dramatically.
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Save Record Evolution
NPB's season save record evolved progressively. Sasaki's 45 (1998) stood until Iwase's 46 (2005). Sarfate (SoftBank) then set 54 saves in 2017 - an NPB record approaching MLB's Francisco Rodriguez's 62 (2008) globally. Iwase's 407 career saves are NPB's all-time most, extremely difficult to surpass.
Save record books offer useful context
Modern Closer Profile
Modern NPB closers predominantly feature 150+ km/h fastballs with putaway breaking balls. However, craft-type closers like Takatsu's sinker and Iwase's slider also succeeded. Beyond velocity and repertoire, closers require pressure-conquering mental strength. The 9th-inning mound is NPB's highest-pressure location - closers who consistently deliver there are irreplaceable team assets.