[1] His first semi-final on the PDC Pro Tour came in just his fourth event when he was beaten 3–2 by Mark Dudbridge in a Scottish Players Championship.

Hamilton defeated Mark Thomson and Mick Manning 3–0 in the early rounds and beat former BDO World Champion Steve Beaton 4–2 to reach the last 16.

Hamilton did manage to gain a share of the prize for highest three-dart checkout by hitting a 170 finish, a feat matched by Taylor.

[6] Hamilton reached the quarter-finals of the Las Vegas Desert Classic before being eliminated by eventual runner-up Raymond van Barneveld 3–1.

Later in the month, Hamilton picked up his first PDC Pro Tour title with a 3–1 win over Colin Lloyd in a Gibraltar Players Championship.

[10] He maintained his form by reaching two semi-finals in Pro Tour events and won his second title in April by beating James Wade in a UK Open Qualifier.

[12] Another semi-final soon followed at the World Darts Trophy, but Hamilton fell agonisingly short of reaching his first major final as he was edged out 6–5 by Gary Anderson.

[13] Hamilton qualified for the first staging of the Grand Slam of Darts by virtue of reaching the semi-finals at the Circus Tavern earlier in the year.

[14] Hamilton's fast ascent in the world of darts continued as he won six matches to reach the final where, despite averaging over 100 against Taylor, he lost 18–11.

At the 2011 World Matchplay he reached the semi-final by beating Gary Anderson, John Henderson, and after being 15-8 down against Simon Whitlock, he pulled back and won the game 17–15, winning 9 legs in a row in a remarkable comeback.

[18] He then beat Vincent van der Voort 4–3, Dave Chisnall 4–0, and Kim Huybrechts 5–2, to reach the semi-finals for the second time in his career.

[19] He played Simon Whitlock and found himself 3–5 down and on the brink of elimination before he produced a super fightback, which included four ton-plus finishes, to prevail 6–5.

[21] The 200–1 outsider at the start of the tournament could not complete a remarkable victory and clinch the title, however, as he valiantly fought hard throughout but could never get ahead of his opponent, Adrian Lewis, who won the match 7–3.

[35] Hamilton topped his group at the Grand Slam of Darts by winning all three of his games,[36] before taking out four ton-plus finishes to edge past Gary Anderson 10–9.

[37] He beat John Part 16–12 in the quarter-finals, and led van Barneveld 6–3 in the semis, before the Dutchman put together a match defining run of nine straight legs and eventually triumphed 16–10.

[47] Hamilton reached the third major final of his career at the UK Open by producing a superb performance to beat Wade 10–8 in the quarter-finals and survived six match darts from van Barneveld in the semis to win 10–9.

[49] He reached the final of the sixth Players Championship two weeks later, but lost 6–1 to van Gerwen meaning he had now not won a ranking event since 2007.

[50] Hamilton hit six out of six doubles against Huybrechts in the first round of the World Grand Prix in a 2–0 set win and then beat Painter 3–1 to ensure he reached at least the quarter-final stage of a major for the ninth consecutive tournament.

[53][54] Hamilton survived a record 18 missed match darts from Part in the first round of the Players Championship Finals as he fought back from 5–1 down to win 6–5 with a 158 checkout and an average of just 75.05.

[57] His early exit, coupled with losing the £100,000 on the Order of Merit from reaching the final two years previously, meant he dropped to world number 11 after the event.

[67] He went on to lose 13–6 to Phil Taylor in the second round and, after dropping out of the top 16 on the Order of Merit, he failed to qualify for any of the remaining major events in 2015.

[70] He received an entry in to the Players Championship Finals when Anderson was unable to obtain a visa and he was defeated 6–1 by Michael van Gerwen in the opening round.

By the middle of August he had reached 27th in the BDO World Championship rankings giving him an outside shot of qualifying for the end of season event.