Career
He plays hurling with his local club Killenaule and with the Tipperary senior inter-county team since 2013. He made his senior debut for Tipperary in January 2013, starting in the half forward line against Limerick in the 2013 Waterford Crystal Cup. On 9 June 2013, he came on as a substitute in the second half against Limerick to make his championship debut.
He went on to score 1-3 as Tipperary were defeated 1-18 to 1-15. On 7 September 2014, O'Dwyer played in his first All-Ireland Final where he scored seven points with five of them coming from play. During the final Tipperary were awarded a free from 97 metres out in injury time with the scores level.
O'Dwyer took the free which was hit just wide to the right and required conformation from Hawk-eye that it was wide, the match ended in a draw. In December 2015, O'Dwyer was named as the Munster Hurler of the Year for 2015.