Hubbard reached the final of the 2012 PDC World Youth Championship. He beat Michael van Gerwen in the final at the O2 Arena in London on 17 May 2012. As a result of reaching the final, he received a PDC Pro Tour card for 2012. Hubbard's title also earned him an invitation to the 2011 Grand Slam of Darts. He lost against Phil Taylor, Mervyn King and Steve Beaton in the group stage.

In May 2012, Hubbard earned a place in the German Darts Championship by defeating Andrew Gilding and Kevin Dowling in the UK qualifier. In the first round of the event in Berlin he pulled off the best result of his career to date by knocking out reigning two-time world champion Adrian Lewis 6–4. He continued his run by defeating Peter Wright in round two, before losing to his practice partner Mervyn King 6–4 in the last 16.

Hubbard also qualified for the third European Tour event, the European Darts Open in Düsseldorf. He beat Andy Hamilton in the first round, and Steve Brown in the second. After defeating Mark Walsh 6–3 in the last 16, a result which secured his qualification for the 2012 World Matchplay, Hubbard shed tears of joy on the stage. He then lost to Richie Burnett 6–2 in the quarter-finals. Hubbard played Wes Newton in the first round of the World Matchplay and was beaten 10–5. In October, he saw off Denis Ovens 6–2 in the opening round of the Dutch Darts Masters, before losing 6–4 to Andy Jenkins. Hubbard qualified for the Grand Slam of Darts again thanks to his 2011 World Youth Championship title, but lost all of three Group C games against Simon Whitlock, Dean Winstanley and Kevin Painter to finish bottom of the table.

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