Delmer Ennis was an American professional baseball outfielder, who played in Major League Baseball (MLB) from 1946 to 1959 for the Philadelphia Phillies, St. Louis Cardinals, Cincinnati Reds, and Chicago White Sox. From 1949 to 1957, he accumulated more runs batted in (RBI) than anyone besides Stan Musial and was eighth in the National League (NL) in home runs. In 1950, Ennis led the NL with 126 RBI as the Phillies won their first pennant in 35 years. He held the Phillies career record of 259 home runs from 1956 to 1980, and ranked 10th in National League history with 1,824 games in the outfield, when his career ended.

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.