Matavao has come through Samoa's PPS Super 9 competition as a key player for the Aana Chiefs.[2] In 2018 he was given a place with Otago under World Rugby's Pacific Combine scheme,[3][4] playing 7 games in the 2018 Mitre 10 Cup season.[5]
In February 2019 he was selected for the first time for the Samoa Sevens.[14][15] He was then named to Samoa's Rugby World Cup squad.[16] After the world cup, he played in the 2020 world sevens series.[17]