Roy Hartsfield's journey through the world of baseball began in the minor leagues, where he honed his skills and developed a reputation as a reliable second baseman. Born on October 25, 1925, in Chattahoochee County, Georgia, Hartsfield's early years in baseball were marked by perseverance and a steady climb through the ranks. He played for several minor league teams, including the Atlanta Crackers, where his performance caught the attention of major league scouts.

In 1950, Hartsfield made his debut in Major League Baseball with the Boston Braves. Over the next three seasons, he played as a second baseman for the Braves, showcasing his defensive abilities and contributing to the team's infield stability. Although his time in the majors was relatively brief, Hartsfield's experience as a player laid the groundwork for his future endeavors in baseball management and coaching.

After his playing career ended, Hartsfield transitioned into coaching and managing, where he found a new avenue to express his understanding of the game. He spent several years managing in the minor leagues, where he developed a reputation for his ability to guide young players and help them reach their potential. His managerial career included stints with teams such as the Spokane Indians and the Hawaii Islanders, where he demonstrated his leadership skills and strategic acumen.

Hartsfield's most prominent role in baseball came in 1977 when he was appointed as the first manager of the Toronto Blue Jays, an expansion team in the American League. Tasked with building a competitive team from scratch, Hartsfield faced the challenges of managing a roster of young and inexperienced players. Despite the difficulties inherent in leading an expansion team, he approached the task with determination and a focus on player development.

During his three-year tenure with the Blue Jays, Hartsfield worked to establish a foundation for the fledgling franchise. While the team struggled in the standings, his efforts in developing young talent were evident. Under his guidance, several players who would become key figures in the team's future began to emerge. Hartsfield's time with the Blue Jays concluded after the 1979 season, but his role in the team's early years remained a part of his legacy.

Following his departure from the Blue Jays, Hartsfield continued to be involved in baseball, taking on various roles within the sport.