Immaculate Inning
Perfect nine-pitch, three-strikeout inning
Example
did you see the sixth inning?
yeah, he threw an immaculate inning
nine pitches, three strikeouts. that's unreal
you don't see that very often
Immaculate inning definition by Slang.net - The Slang Dictionary
This page explains what the slang term "Immaculate inning" means. The definition, example, and related terms listed above have been manually compiled and written by the Slang.net team.
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In baseball, an "immaculate inning" is one of the sport's rarest pitching feats: striking out all three batters in an inning using the minimum possible nine pitches. In other words, the pitcher throws three strikes to each batter without wasting a single pitch.
Although pitchers had achieved the feat since the 1800s, no single person is credited with coining the term. The phrase entered widespread baseball vocabulary only in the early 21st century, becoming more popular as advanced statistics, highlight reels, and social media made rare achievements easier to celebrate.
Since it requires perfect efficiency against three consecutive hitters, an immaculate inning is celebrated as a display of exceptional command, precision, and dominance. Today, broadcasters, baseball writers, players, and fans use the term whenever a pitcher records this perfect nine-pitch, three-strikeout inning, and it's widely regarded as one of the game's most satisfying statistical gems.