Callum rounded off a stunning season in the amateur ranks in 2008 by winning his place on The European Tour International Schedule at the Qualifying School – Final Stage. He won the Scottish Amateur title at Carnoustie before holing the winning putt for Great Britain and Ireland against Europe in the St Andrews Trophy.

His outstanding performance in the Eisenhower Trophy – the World Amateur Team Championships – drove Scotland to an historic first victory in the competition before he set his sights on The European Tour Qualifying School. Came through all three Stages of the School, playing 252 holes in total, to secure his 2009 Tour card and then promptly join the professional ranks.