A member of Thistle's under 19 squad that won the SFL Youth Cup in May 2010, Fraser was given his first professional contract until May 2013. On 11 January 2011 he made his first team debut in the Scottish Cup as a substitute against Falkirk at the Falkirk Stadium. On 15 January he scored his first goal for the club against Stirling Albion. In all he made 17 appearances scoring twice before being loaned out to Stenhousemuir at the start of the next season.
