Shibe Park, known later as Connie Mack Stadium, was a ballpark located in Philadelphia. It was the home of the Philadelphia Athletics of the American League (AL) and the Philadelphia Phillies of the National League (NL). When it opened April 12, 1909, it became baseball's first steel-and-concrete stadium. In different eras it was home to "The $100,000 Infield", "The Whiz Kids", and "The 1964 Phold". The venue's two home teams won both the first and last games at the stadium: the Athletics beat the Boston Red Sox 8–1 on opening day 1909, while the Phillies beat the Montreal Expos 2–1 on October 1, 1970, in the park's final contest.

A ballpark, or baseball park, is a type of sports venue where baseball is played. The playing field is divided into two field sections called the infield and the outfield. The infield is an area whose dimensions are rigidly defined in part based on the placement of bases, and the outfield is where dimensions can vary widely from ballpark to ballpark. A larger ballpark may also be called a baseball stadium because it shares characteristics of other stadiums.