[2] In only his fifth professional tournament, in November 2013, Holman made the cut at the 2013 Talisker Masters played at the Royal Melbourne Golf Club and significantly, was tied for the lead at the half-way mark.

Holman earned his Asian Tour card for 2014 through Q School and placed 52nd on the Order of Merit, with his best finish a tie for second at the ICTSI Philippine Open.

In all, he played ten European Tour events in 2015 and finished 135th on the Race to Dubai as an affiliate member.

In December 2015, Holman earned the first professional win of his career, the Australian PGA Championship, with a par on the first hole of a playoff with Harold Varner III of the United States and Dylan Frittelli of South Africa.

[7] The win at a tournament co-sanctioned by the European Tour earned Holman the top spot on the final 2015 PGA Tour of Australasia Order of Merit as well as spots in the 2016 Open Championship at Royal Troon and the 2016 WGC-Bridgestone Invitational.