Mark Schaeffer, born in 1948, was a professional baseball pitcher whose career spanned a brief period in the early 1970s. Making his Major League debut on April 18, 1972, Schaeffer showcased his talents on the mound until his final appearance on September 26 of the same year. During his short stint in the big leagues, he compiled a record of 2-0, with an earned run average (ERA) of 4.61. Schaeffer demonstrated his ability to strike out batters, totaling 25 strikeouts throughout his career, and he also recorded one save.
Schaeffer's playing career unfolded during a transformative era in baseball, characterized by the transition from the deadball era to a more offensive-focused game. While his time in the spotlight was limited, Schaeffer's contributions as a pitcher remain part of the rich tapestry of baseball history, reflecting the challenges and competitive nature of the sport during the early 1970s. His journey through the majors, though brief, remains a testament to the dedication and resilience required to reach the highest level of professional baseball.