An immaculate inning is the very rare occasion when a pitcher strikes out the side on just nine pitches. So, one-two-three, one-two-three, one-two-three. It is incredible when it happens.
And Cubs pitcher Hayden Wesneski just did it to the Pirates:
That is just nasty, nasty, beautiful stuff from Wesneski.
If you were wondering about the Cubs’ history with immaculate innings: