[9] Dally M Winger of the Year en route to the premiership, and representative Kiwis debut (2013) In round 4, against Parramatta Eels at the SFS, Tuivasa-Sheck scored his first tries in first grade completing a hat-trick in the Roosters' 50-0 win.

Playing for the Kiwis in the 2013 Rugby League World Cup,[13] Tuivasa-Sheck made his international debut against Samoa in the 42-24 win at Halliwell Jones Stadium.

Becoming one of rugby league’s young superstars (2014) Tuivasa-Sheck played on the wing for New Zealand in the 2014 Anzac Test, with the Kiwis losing 30-18.

[26] In round five, in his first game against his old club the Roosters, he combined with Tuimoala Lolohea to score the match-winning try that gave the Warriors a 32-28 victory in golden point.

[27] In Round 7 against the Canterbury-Bankstown Bulldogs, he suffered a season ending anterior cruciate ligament (ACL) knee injury.

Tuivasa-Sheck finished the season scoring just 3 tries and playing in 23 games for the Warriors, but suffered a season-ending injury early in the Week 1 Finals loss to the Penrith Panthers.

Permanent move to Australia; Dally M Captain of the Year (2020) In round 16 of the 2020 NRL season, he scored two tries in a 36-6 victory over Newcastle at Scully Park in Tamworth.

[33] On 6 February, Tuivasa-Sheck signed a two-year contract with the Blues from the 2022 season, and will also play for Auckland in the Mitre 10 Cup.

[34] On 26 July, it was announced that Tuivasa-Sheck would leave the club immediately to go home to New Zealand before the Trans-Tasman travel bubble was closed.

Final season in rugby union (2023) On 20 April 2023, Tuivasa-Sheck confirmed he will be returning to the New Zealand Warriors on a three-year deal beginning in 2024.

Later that year Tuivasa-Sheck revealed on The Morning Shift Podcast that in his return to the club that he will go in as a centre, rather than his traditional position of fullback.

Tuivasa-Sheck made 18 appearances for the New Zealand Warriors in the 2024 NRL season and scored five tries which saw the club finish 13th on the table.

[40] Tuivasa-Sheck was convicted of drink-driving in October 2023 after he was caught with excess breath alcohol at a routine police checkpoint in the early hours of 10 September.