Jack Katoll was a professional baseball pitcher, born on June 24, 1875, in Finckenstein, Prussia, and passed away on June 18, 1955, in Woodstock, Illinois, U.S. Throughout his career, Katoll played in the Major Leagues from 1898 to 1902, showcasing his skills for teams such as the Chicago Orphans, Chicago White Sox, and Baltimore Orioles. During his time in the league, he held a win–loss record of 17–22, an earned run average (ERA) of 3.32, and achieved 90 strikeouts. Katoll batted left-handed and threw right-handed, making his MLB debut on September 9, 1898, for the Chicago Orphans and concluding his Major League appearances on September 29, 1902, for the Baltimore Orioles.

Katoll's tenure in professional baseball, while not marked by superstar status, was nonetheless a solid career during the early days of Major League Baseball. His statistics reflect a competent pitcher who contributed to his teams over a span of five years. His journey from Prussia to the United States, and ultimately to professional baseball, illustrates the diverse backgrounds of early baseball players and their impact on the sport. After his retirement from baseball, Katoll's legacy continued through records and memories preserved in baseball history, with his career statistics and information accessible through platforms like Baseball Reference. His story is a testament to the players who laid the groundwork for what has become America's pastime.