This ballpark is currently in its second configuration, beginning life originally as "Grant Field" in 1934. In its original incarnation, it served as a Minor League Spring Training Home for both the Buffalo Bisons and the San Antonio Missions, but didn't serve as a Major League Spring Training facility until the birth of the Toronto Blue Jays in 1977. The small wood and concrete WPA park would remain the home of the Blue Jays until 1989 when  the grandstand was finally torn down and rebuilt from the ground up into a far more modern ballpark in 1990, as you see here. Since then it has served as home for both the Blue Jays throughout the spring and as a home for the Single-A Florida State League Dunedin Blue Jays throughout the rest of the summer.