What is the difference between a cork center versus a poly core center in a fast pitch softball?

In fast pitch softball, a cork center ball has a solid cork core, which generally offers a softer feel and can provide better grip and control for pitchers. In contrast, a poly core ball features a synthetic material core that tends to be more durable and can offer greater distance when hit. The choice between the two often depends on player preference and the level of play, with cork balls typically favored in higher levels of competition for their performance characteristics.