Paul O'Callaghan broke into the CSBL with the Arlington Heights Rebels in 1984. He played with the Arlington Heights Cardinals from 1988-1990 and with the Lombard Orioles from 1991-2002. He has been a coach with the Lombard Orioles form 2002 to the present. He made eight trips to the AABC World Series as player and coach. He played for the 1992 AABC World Series Champions and coach for the 2007 AABC World Series Champions and 2018 NABF Major Division Champion.