In only his second major league appearance, Cleveland Indians pitcher Paul Shuey strikes out four batters in the 9th inning of the Indians’ 9 – 3 victory over Detroit. Shuey becomes only the 10th pitcher in American League history, and the first rookie, to strike out four in an inning.

On May 14, 1994 — In only his second major league appearance, Cleveland Indians pitcher Paul Shuey strikes out four batters in the 9th inning of the Indians’ 9 – 3 victory over Detroit. Shuey becomes only the 10th pitcher in American League history, and the first rookie, to strike out four in an inning.

Source:
Baseball Reference May 14