Rubuta ci gaba don wannan sakin layi - Karlsson ya kasance memba na ƙungiyar Turai ta Turai a cikin Seve Trophy a 2000, 2002 da 2007. A cikin 1999 ya kasance na goma sha ɗaya a kan teburin cancantar Ryder Cup kawai ya rasa wurin ƙarshe na atomatik, kuma ba a zaɓe shi a matsayin zaɓi na kyaftin ba. Ya fara buga gasar cin kofin Ryder a 2006, yana da shekaru 37, tare da dan kasar Sweden Henrik Stenson. Ya sake taka leda a shekarar 2008
, suna yin kawance da Pádraig Harrington a wasan hudu da kuma doke Justin Leonard 5 & 3 a wasan daya a ranar Lahadi.