Moli debuted for Waikato during the 2015 ITM Cup in a match against on 14 August 2015 after starring as a school boy. Hindered by a foot injury, he only played 6 games during his first season of provincial level rugby, 2 of which were from the start. 2016 again saw him make 6 appearances, this time however, they were all from the start as he began to make the number 1 jersey his own. In 2019 Moli made his debut for against his old team at Waikato Stadium in Hamilton
Super Rugby
After just 6 games at provincial level, Moli made the Chiefs Super Rugby squad for the 2016 Super Rugby season, debuting in a match against the in Port Elizabeth. A season-ending injury to Nepo Laulala meant that he received more game time during his debut season than he might have otherwise expected, playing 10 times and scoring 1 try. He was retained in the squad for 2017. Moli missed the whole 2018 Super Rugby season due to a leg injury. He forced his way back into the first-choice team during the 2019 Super Rugby season, establishing himself as one of the Chiefs' best performers during the season.
International
Moli represented New Zealand Schools in 2013 and was a member of the New Zealand Under 20 teams which competed in the 2014 and 2015World Rugby Under 20 Championships. He appeared 5 times as New Zealand finished 3rd in 2014 and made another 5 appearances, this time as captain as the Kiwis lifted the title in 2015 with a 21-16 victory over England in the final. Moli was selected to be a non-playing "Apprentice" in the All Blacks for the 2017 Rugby Championship. Moli is the third New Zealander to be selected for the All Blacks as an apprentice, following team mates Ardie Savea who was an apprentice in 2013 and Jordie Barrett who held that title in 2016. After injuries to Joe Moody and Owen Franks, the All Blacks coaches had to seek more depth in the end-of-year tour. This meant that after starting in a 31-22 loss against the All Blacks for the Barbarians coached by Robbie Deans on 4 November, Moli joined the All Blacks squad again, making his debut for New Zealand against a French XV 10 days later, replacing Tim Perry with 23 minutes left. Moli was one of six players to make their All Blacks debut in the 28-23 win. In 2019, Moli was re-selected to the All Blacks team, named to play Argentina in the Investec Rugby Championship Test at Jose Amalfitani Stadium in Buenos Aires on Saturday 20 July. He made his test debut in the 60th minute of the game, replacing Ofa Tu'ungafasi. With experienced props, Karl Tu'inukuafe and Owen Franks, axed from the team, Moli also earned an appearance off the bench against Australia during a 26-47 loss. On 28 August 2019, Moli was picked for the All Blacks 2019 Rugby World Cup squad, by New Zealand Head Coach, Steve Hansen. Moli earned his first start for the All Blacks in New Zealand's 63-0 win over Canada, lasting the whole 80 minutes of the test. Moli played one more test during the competition, coming off the bench against Wales in the Bronze Final, with New Zealand winning by 40-17 to claim third place.
