During this time, Cum Posey, the owner and manager of the Homestead Grays, began to feel threatened by the Crawfords as they took in larger crowds. Posey convinced Hooks Tinker, the manager of the Crawfords, to bring on his brother, See Posey, as a booker. By law, all amateur games were free to the public, but Posey closed all but one gate during one tournament and forced the public to give donations to the club. This hurt the popularity of the team and began their demise. Soon after, Posey managed to get Josh Gibson to sign on with his team the Grays, and that essentially killed the Crawfords at Ammon Field. Charging people for free games and losing their best player, interest in the Crawfords vanished.
In the 1940s, Ammon Field was split into two smaller fields for youths to use as a field to play on. Today, the field has been renamed the Josh Gibson Field and works hand in hand with the Josh Gibson Foundation to preserve the history of the Negro League and promote the play of baseball among the youths of the area. The field underwent a renovation in 2008, during which time, the field and the area around the field got some much needed upgrades for the youths that use the field.