birth_place nationality birth_date article_title name
nagold , germany switzerland swiss december 23 , 1948 stefan dörflinger
 stefan dörflinger
stefan dörflinger

stefan dörflinger -lrb- born december 23 , 1948 in nagold , germany -rrb- is a swiss former grand prix motorcycle road racer .
dörflinger won four consecutive fim road racing world championships .
in 1982 and 1983 , he was the 50 cc world champion .
in 1984 , the fim increased the displacement capacity to 80 cc and dörflinger would become the first ever 80 cc world champion .
he successfully defended his title in 1985 .
his lengthy grand prix career spanned 18 seasons .
