Sandelin turned professional in 1987 and despite several visits to qualifying school, did not win a place on the European Tour until 1995 when he graduated from the second tier Challenge Tour by finishing in 9th place on the end of season rankings in 1994.
Sandelin transitioned into professional golf in 1987 and, after multiple attempts to gain entry through qualifying school, didn't secure a spot on the European Tour until 1995 when he advanced from the secondary tier Challenge Tour by finishing 9th in the year-end standings of 1994.