In 2009, Asiata was a member of the
Parramatta Eels side that finished runners-up in the
Harold Matthews Cup. In 2010, he played with the Western Sydney Academy in the
S.G. Ball Cup before being signed by the
Sydney Roosters. He played for the Roosters' S.G. Ball team in 2011 and played for their
National Youth Competition (NYC) team in 2012 and 2013. At the end of 2013, Asiata was named at lock in the 2013 NYC team of the year. In November 2013 Asiata signed a two-year contract with the
North Queensland Cowboys, starting in 2014, following his
Sydney Roosters NYC coach,
Paul Green, to the North Queensland outfit.
2014 Asiata started the year playing for the North Queensland
Queensland Cup affiliate, the
Mackay Cutters. He would play 18 games for them in 2014, scoring five tries. In round 12 of the
2014 NRL season, Asiata made his debut for the North Queensland club, against the
Melbourne Storm, off interchange bench in their 22–0 win at
1300SMILES Stadium. Asiata finished his debut year in the NRL with 6 matches for the Cowboys. On 14 October 2014, Asiata was named the Cowboys' rookie of the year at their annual presentation ball. On 27 April, he was named in
Samoa's 18-man squad to face
Tonga in the 2015
Polynesian Cup. He was the side's 18th man and did not participate in the match. In round 9, he made his first start in the NRL, in North Queensland's 23–16 victory over the
Canterbury-Bankstown Bulldogs. On 21 May, he re-signed with North Queensland on a two-year contract until the end of the
2017 NRL season. On 4 October, in the
2015 NRL Grand Final against the
Brisbane Broncos, Asiata played off the interchange bench in the clubs golden-point 17–16 win. He finished off his premiership winning
2015 season having played in 25 matches.
2016 On 2 February, Asiata was named in North Queensland's
2016 NRL Auckland Nines squad. On 21 February, he was a member of the Cowboys'
2016 World Club Challenge winning side, coming off the bench in the side's 38–4 victory over
Leeds at
Headingley Stadium. On 7 May, he made his international debut for Samoa against Tonga in the 2016
Polynesian Cup. Asiata played 19 games in 2016, which included his third career start, against the
Canberra Raiders in Round 18.
2017 In Round 7 of the
2017 NRL season, Asiata started at halfback against the
St. George Illawarra Dragons, replacing the injured
Johnathan Thurston. In the 26–20 loss, Asiata finished the game with two try-assists and two line-break assists. On 16 May, he re-signed with the North Queensland club until the end of the
2020 NRL season. In North Queensland's semi-final win over the
Parramatta Eels, his 76th NRL game, Asiata scored his first ever NRL try. On 1 October, he played off the interchange bench in North Queensland's
2017 NRL Grand Final loss to the
Melbourne Storm. Asiata finished the 2017 season playing in all 28 games for the club.
2018 After playing in the first seven games of the
2018 NRL season, Asiata suffered a pectoral tear in North Queensland's 26–14 win over the
Gold Coast Titans, which saw him miss 11 weeks. He returned for the side's Round 18 game against
Canberra and played the last eight games of the season. Due to the injury, he finished the season with just 15 games played (starting four of them), his lowest total since his rookie season.
2019 Asiata played in all 24 games for North Queensland in
2019, scoring three tries, his highest single-season try tally. Due to injuries, he spent considerable time in the halves once again, starting 11 games at
five-eighth and one at
halfback. In Round 7, he played his 100th NRL game in the sides 12–24 loss to the
Canterbury-Bankstown Bulldogs. On 22 June, he made his debut for
Tonga, starting at five-eighth in their 14–34 loss to
New Zealand.
2020 Asiata played in the first four games of the season for North Queensland before suffering a knee injury in a 16–26 loss to the
Cronulla-Sutherland Sharks, ruling him out for eight weeks. He returned in the clubs
Round 12 loss to the
Canberra Raiders. In Round 18, Asiata was charged with dangerous contact and was suspended for one game. On 24 September, North Queensland announced that Asiata would leave the club at the end of the season. In Round 20, he played his final game for North Queensland, a 32–16 win over the
Brisbane Broncos. On 3 October, he won the Cowboys' Club Person of the Year award for the second time. In November 2020, Asiata signed a one-year deal with the
Brisbane Broncos.
2021 On 16 September, Asiata signed a one-year deal with the
Canterbury-Bankstown Bulldogs commencing in 2022. However the contract was terminated on 7 December for his continual refusal to receive a COVID-19 vaccination. On 15 December it was announced that Asiata had signed for English
Betfred Championship side
Leigh Centurions.
2022 In round 1 of the 2022 Championship season, Asiata made his club debut for
Leigh in their 50–4 victory over
Whitehaven R.L.F.C. On 28 May 2022, Asiata played for Leigh in their
2022 RFL 1895 Cup final victory over
Featherstone. On 3 October 2022, Asiata played for Leigh in their
Million Pound Game victory over
Batley which saw the club promoted back to the
Super League.
2023 Following Leigh's 12-10 Challenge Cup semi-final victory over
St Helens, Asiata was cited but not suspended for alleged cannonball tackles. It was reported that four players suffered injuries following tackles from Asiata with
Alex Walmsley and
Agnatius Paasi being ruled out for the season. St Helens head coach
Paul Wellens accused the RFL of not protecting players following the game. On 12 August, Asiata captained Leigh Leopards in their Challenge Cup final victory over Hull Kingston Rovers. Asiata played 24 games for Leigh in the 2023 Super League season as the club finished fifth on the table and qualified for the playoffs.
2024 In round 3 of the 2024 Super League season, Leigh played against St Helens for the first time since the Challenge Cup semi-final with Asiata performing a cannonball tackle within the first minute of the match similar to the tackles he performed last year in the corresponding fixture. Asiata was given a yellow card and ban over the incident, however the ban received was later rescinded as it was deemed Asiata's action were not illegal. Asiata later returned to the match but suffered a torn calf muscle as Leigh lost the game 12-4. On 2 October 2024 it was reported that he had signed for
Hull F.C. on a three-year deal.
2025 Asiata played 14 games for Hull F.C. in the 2025 Super League season as the club finished 7th on the table. ==Achievements and accolades==