Complex sentence: Marcos René Maidana (born July 17,1983) is an Argentine former professional boxer and a two-weight former world champion, having held the WBA (Regular) super lightweight and WBA (Super) welterweight titles.
Split into simpler sentences: Marcos René Maidana (born July 17,1983) is an Argentine former professional boxer and a two-weight former world champion. He held the WBA (Regular) super lightweight and WBA (Super) welterweight titles.