He previously played for the Brisbane Broncos and South Sydney Rabbitohs in the NRL, and at representative level for Queensland in the State of Origin series.

[5] In 2012, Su'A played in the Souths Logan Magpies' Cyril Connell Cup and National Title winning sides as a 15-year-old.

[20] In the 2018 NRL season, Su'A made 15 appearances for Brisbane, but missed out on playing in the club's finals campaign due to injury.

On 28 June, Su'A signed a two-year contract to join South Sydney in a mid-season switch from Brisbane.

Su'A made his debut for South Sydney against Manly-Warringah in Round 17 at ANZ Stadium which ended in a 21–20 victory.

He made his debut in Game One, playing a solid 48 minutes off the bench as Queensland upset New South Wales.

In the 2021 NRL Season, Su'A reinforced the previous years success, playing an instrumental role that helped the Rabbitohs achieve a Top 4 finish.