[2] Hundreds of PONY players have gone on to Major League Baseball careers, including Hall of Fame inductees Tony Gwynn and Cal Ripken Jr.[4] Children at the Washington, Pennsylvania, YMCA named the organization PONY, which stood for "Protect Our Neighborhood Youth."

From 1964 through 1983, the tournament did not have a set location and sometimes took place in other states: California (1964–1965, 1978), Iowa (1979–1980), Illinois (1967, 1974–1975), Nebraska (1966), Texas (1977), and Washington (1983).

The first team from outside the United States to play in the tournament was Monterrey, Mexico, in 1959[14]—Monterrey had won the Little League World Series in 1957 and 1958.

In the 2023 Pony Asia-Pacific Zone Championships held in Fukushima, Japan, a controversial decision was made, where the Japanese officials unilaterally revoked Taiwan (Chinese Taipei)'s Pony League World Series qualification after losing to Taiwan in the championship game.

[60] The incident attracted widespread media attention in Taiwan due to the perceived lack of transparency and fairness.

The Taoyuan City Government and Taiwan's Sports Administration immediately filed an official complaint to the PONY Baseball and Softball organization headquarters, and are waiting for a reply.