A Division of Russell Corporation, the Spalding Group consists of two business units; Spalding in Springfield, MA and American Athletic, Inc. (AAI) in Jefferson, IA. The two companies, collectively combined, are now the largest basketball equipment supplier in the world. Spalding is the official basketball of the National Basketball Association (NBA) and Women's National Basketball Association (WNBA), the official backboard of the NBA and NCAA, the official volleyball of the King of the Beach Volleyball Tour and the official football of the Arena Football League (AFL) and Pop Warner. In addition to being the leading producer and marketer of basketballs, footballs, volleyballs and soccer balls, Springfield, MA-based Spalding produces softballs under the Dudley brand.