The Rules - Five Innings as the Threshold
An NPB game becomes official after five complete innings, or four and a half if the home team leads. The team ahead at that point wins; a tie results in a draw. Games stopped before five innings are declared no-games and replayed. The five-inning threshold means roughly 56% of a regulation game has been played, leaving four innings of potential comeback unrealized. Rain-shortened games are the starkest reminder that baseball outcomes depend on factors beyond human control.
Saved by Rain - Victories That Might Not Have Held
The greatest beneficiaries of called games are teams holding early leads with vulnerable pitching depth. A starter who dominated through five innings but would have tired in the sixth, a shaky bullpen that would have surrendered the lead: rain freezes these fragile advantages into permanent victories. Conversely, teams with slow-starting lineups that typically rally in middle innings suffer most, denied the opportunity to mount comebacks they were structurally built to produce.
Domed Stadiums Changed the Map
The proliferation of domed stadiums dramatically altered the distribution of called games in NPB. Tokyo Dome opened in 1988, followed by Fukuoka Dome in 1993, Osaka Dome and Nagoya Dome in 1997, and Sapporo Dome in 2001. Teams in domed stadiums became immune to rain-shortened games, while outdoor venues like Koshien, Yokohama Stadium, and Jingu Stadium remain vulnerable during the rainy season and typhoon months. ES CON Field Hokkaido's retractable roof, opened in 2023, represents the latest approach to weather management.
Impact on Pitcher Records
Called games affect individual pitching records. A starter who pitches all five innings of a rain-shortened game receives credit for a complete game, a distinction that normally requires nine innings. Conversely, a pitcher carrying a no-hitter through five innings receives only a reference-record notation rather than an official no-hitter if the game is called. Weather intervenes in the record books as mercilessly as it does in the standings.
Rain Prayers and Reverse Teru-Teru Bozu
When rain threatens a game in progress, opposing fan bases develop contradictory weather wishes. Fans of the leading team pray for heavier rain; fans of the trailing team pray for clearing skies. Japanese culture's 'teru-teru bozu' tradition of hanging paper dolls to wish for fair weather finds its ironic inversion among baseball fans who hang them upside down to summon rain. Called games remind fans that baseball's outcomes sometimes depend on forces entirely beyond human agency.
Incomplete Justice or Nature's Verdict?
Opinions on called games divide between those who view five-inning results as incomplete justice and those who accept them as nature's verdict. Critics argue that only nine innings produce legitimate outcomes, especially when called-game results influence pennant races. Defenders note that continuing play on waterlogged fields risks player injury, compromises pitching control, and degrades defensive conditions. Called games are evidence that baseball is an outdoor sport subject to environmental uncertainty, and that uncertainty may be part of what makes the sport compelling.