He turned professional in 1989 and qualified for membership of the European Tour at the 1990 Qualifying School .
Karlsson was born in Katrineholm , Sweden where his father was a greenskeeper at the local golf club .
Karlsson turned professional in 1989 and qualified for membership of the European Tour at the 1990 Qualifying School .
Karlsson was born in Katrineholm , Sweden where his father was a greenskeeper at the local golf club .