Fall Ball Home Page Home > Thunder > PBO Ball Fall Information Print Page 2018 PBO Fall Ball Fall Ball is not run, organized or sponsored by PBO. Any coach wanting to coach a fall ball team may due so by getting enough kids to form a team. All costs and organization of the team is the burden of the coach and team. In order to use the PBO fields for games and practice, and the PBO insurance, all players on the team must be currently registered PBO players as of the 2018 season. For fall league information please see http://www.clsunball.com/.