Complex sentence: Known as "Bam Bam", Johnson turned pro in 1986 and in 1994 won the WBA Bantamweight Title by TKO'ing Junior Jones in the 11th round.
Split into simpler sentences: Known as "Bam Bam", Johnson turned professional in 1986. In 1994 he won the WBA bantamweight title by TKOing Junior Jones in the 11th round.