Feagai made his debut in round 9 of the 2021 NRL season for St. George Illawarra in their 32–12 victory against Canterbury-Bankstown, scoring a try.

[5] During round 6 of the 2022 NRL season Feagai scored a double as the St. George Illawarra in their 21-16 win over the Newcastle Knights.

[7] In October Feagai was named in the Samoa squad for the 2021 Rugby League World Cup.

[8] In round 12 of the 2023 NRL season, Feagai scored the winning try for St. George Illawarra in the last minute of the match as they defeated the Sydney Roosters 24-22 at Kogarah Oval.

[10] In round 14 of the 2024 NRL season, Feagai scored two tries for St. George Illawarra in their 56-14 victory over the Wests Tigers.