[4] At the 2021 Grand Slam of Darts, Rafferty was drawn into a group with Gerwyn Price, Martin Schindler and Krzysztof Ratajski.

He qualified for the knockout stage with wins over Schindler and Ratajski,[5] but was eliminated after a 10–2 loss against Jonny Clayton.

[6][7] Rafferty was the runner-up at the 2021 PDC World Youth Championship, losing 6–4 to Ted Evetts.

[10] Rafferty has won 12 PDC Development Tour titles, with his most recent win coming at Event 14 of the 2024 PDC Development Tour series, where he defeated Marvin van Velzen 5–3 in the final.

This Northern Ireland biographical article related to darts is a stub.