O'Connor is particularly noted for his spectacular high fielding ability in Gaelic football, being described as one of the brightest stars in Kerry football prior to his move to Australia.[3] O'Connor won two All-Ireland minor football medals with Kerry in 2014 and 2015.[4] He captained the side and won the Man of the Match award in the 2015 final.[5][6] He also won two Hogan Cup titles with his school Pobalscoil Chorca Dhuibhne in both those years.
^The 2020 season was played with 17 home-and-away matches per team (down from 22) and 16-minute quarters with time on (down from 20-minute quarters with time on) due to the impact of the COVID-19 pandemic.