Softball was created by George Hancock in Chicago in 1887. The game originated as an indoor variation of baseball and was eventually converted to an outdoor game.

In the spring, Hancock took his game outdoors and played it on fields not large enough for baseball. It was called indoor-outdoor and Hancock emerged as the recognized authority in the 19th century.

Hancock appended 19 special rules to adapt the outdoor game to the indoor game. Hancock’s game gradually spread throughout the country and ultimately flourished in Minneapolis, thanks to the efforts and ingenuity of Lewis Rober, a Minneapolis Fire Department lieutenant, who wanted a game to keep his firemen fit during their idle time. Using a vacant lot adjacent to the firehouse, Rober laid out bases with a pitching distance of 35 feet. His ball was a small sized medicine ball with the bat two inches in diameter. The game became popular overnight and other fire companies began to play. In 1895, Rober transferred to another fire company and organized a team he called the Kittens. George Kehoe, captain of Truck Company No. 1, named Rober’s version of softball “Kitten League Ball" in the summer of 1900. It was later shortened to “Kitten Ball."

Rober’s game was known as Kitten Ball until 1925, when the Minneapolis Park Board changed it to Diamond Ball, one of a half dozen names used during this time for softball. The name softball didn’t come about until 1926 when Walter Hakanson, a Denver YMCA official suggested it to the International Joint Rules Committee. Hakanson had come up with the name in 1926. Efforts to organize softball on a national basis didn’t materialize until 1933, when Leo Fischer and Michael J. Pauley, a Chicago Sporting goods salesman, conceived the idea of organizing thousands of local softball teams in America into cohesive state organizations, and state organizations into a national organization.

It was evident that softball finally had a foundation from which to grow, and, in 1935, the Playground Association Softball Guide, wrote: “the years of persistent effort, constant promotion and unchanging faith of believers in softball proved to have not been in vain, for in 1934 softball came into its own.

The International Softball World Championships in 1965 developed women’s softball by making it an international game, a step towards the Pan-American Games and the Olympics.

The popularity of women’s fastpitch softball has grown steadily since the professional league’s end in 1980. In fact, once again, there is another professional fastpitch league called the NPF (National Pro Fastpitch League). The Amateur Softball Association reports that it “annually registers over 260,000 teams combining to form a membership of more than 4.5 million" (About the ASA). These numbers do not all apply to fastpitch, yet it is consistently growing along with slowpitch. All over America hundreds of leagues and thousands of players enthusiastically accepted this major team game and Softball became one of America’s favourite sports."

The popularity of softball has grown considerably, both at the recreational and competitive levels. In fact, not only is women’s fastpitch softball a popular high school and college sport, it was recognized as an Olympic sport in 1996.