He reached the final of the 2018 BDO World Youth Darts Championship.
In 2018 he reached the final BDO World Youth Darts Championship which took place at the Lakeside Country Club in Frimley Green.
In 2019 he won the WDF Europe Cup Youth for Ireland, alongside Keane Barry, Damien Moore and Dylan Slevin.
Heffernan quit the BDO in 2020 and played PDC Q-School in 2021[1] but failed to progress to the main round for a chance to earn a tour card.
This Irish biographical article related to darts is a stub.