 The title was thus considered the most important title in the promotion until Jerry Lawler won the AWA World Heavyweight Championship on May 5, 1988.On December 13, 1988, Lawler defeated Kerry Von Erich to win the World Class Heavyweight Championship and effectively rename the latter title the USWA Unified World Heavyweight Championship and make it the new top championship in Memphis.The CWA title continued as the secondary title until late 1989 when it was replaced with the USWA Southern Heavyweight Championship.