Ku dhammaystir weedha soo socota: Xilli ciyaareedkii xigay Karlsson wuxuu ka ciyaaray xulka qaranka Sweden ee ka hooseeya 18 jirka 1982 IIHF European U18 Championship, isagoo dhaliyay laba dhibcood shan ciyaarood wuxuuna ku guuleystay billad dahab ah. Karlsson wuxuu sidoo kale ka ciyaaray xulka qaranka Iswiidhan ee da'doodu ka yar tahay 20 sano 1983
Koobka Hockey-ga Dhalinyarada Adduunka ee 1984. Xilli ciyaareedkii 1982/83, Karlsson waxaa la siiyay fursad uu ku ciyaaro Modo Hockey ee Elitserien, horyaalka ugu sareeya ee barafka barafka ee Sweden. Labadii xilli ciyaareed ee ugu horreeyay kooxda ma uusan awoodin inuu dhaliyo wax gool ah, iyo xilli ciyaareedkii 1983/84 kooxda ayaa hoos ugu dhacday Division 1. Si kastaba ha noqotee, Karlsson iyo Modo si dhakhso leh ayaa loogu soo celiyay Elitserien xilli ciyaareedkii xigay.