Complex sentence: Magnus Larsson (born March 25,1970 in Olofström, Blekinge) is a former professional tennis player from Sweden, who turned professional in 1989 and won his first top-level singles title at Florence in 1990.
Split into simpler sentences: Magnus Larsson (born March 25,1970 in Olofström, Blekinge, Sweden) is a former professional tennis player from Sweden. Larsson turned professional in 1989 and won his first top-level singles title at Florence in 1990.