Stone qualified for the 2012 BDO World Championship and reached the last 16, defeating Ron Meulenkamp 3–0 but losing 4–0 to Martin Adams.

Stone entered the PDC Q School in January 2014, and secured a tour card on the third day with a 5–2 win over Steve Grubb in the final round.

[7] He qualified for the 2015 German Darts Masters and overcame Rowby-John Rodriguez 6–4, before losing 6–2 to Michael van Gerwen.

[8] Stone also reached the second round of the Dutch Darts Masters by beating Dean Winstanley 6–4 with an average of almost 100, but then narrowly lost 6–5 to Steve Beaton.

[11] A trio of last 64 defeats saw him qualify for the 2016 UK Open, where he beat Johnny Haines 6–5, before losing 6–2 to Jamie Caven in the second round.