On 30 July, Seumanufagai re-signed with the Tigers on a 1-year contract. Coach Mick Potter said, “Ava has steadily improved as the year has gone on. The players love it when Ava comes on the field, he gives us that lift and really deserves what he is getting.” He finished the year having played in 23 matches. He was also named in the Samoa train-on squad for the Four Nations, but didn’t make the final 24 man squad.

Seumanufagai again played in the Auckland Nines. On 2 May, he signed a 2-year contract with the Cronulla-Sutherland Sharks, starting in 2018. In Round 10 against the South Sydney Rabbitohs, Seumanufagai was sinbinned for punching former Tigers team mate Robbie Farah in the head. In Round 15 against his future club the Cronulla-Sutherland Sharks, Seumanufagai played his 100th NRL match in the Tigers 24-22 loss at Shark Park. Seumanufagai finished his last season with the Tigers with 2 tries from 18 matches.

In Round 1 of the 2018 NRL season, Seumanufagai made his club debut for the Cronulla-Sutherland Sharks against the North Queensland Cowboys, playing off the interchange bench in the 20-14 loss at 1300SMILES Stadium.

Seumanufagai played for Cronulla’s feeder club side Newtown in the 2018 Intrust Super Premiership NSW grand final against Canterbury-Bankstown at Leichhardt Oval which Newtown lost 18-12.

On 31 January and 1 February, Seumanufagai played for the Tigers in the 2015 NRL Auckland Nines. He made 23 appearances in the 2015 NRL season, all from the interchange bench as well as scoring 1 try for the Tigers. He was named as a reserve in Zero Tackle’s Team of the Year. On 30 September, he re-signed with the Tigers for a further 2 seasons. Coach Jason Taylor said, “Ava is a tireless worker and a real asset to have on our playing roster. He’s only 24 years old, so I’m confident that his best football is still ahead of him and that’s really exciting for the club.”

Seumanufagai played for the Parramatta Eels NYC team in 2010 and 2011, scoring 2 tries in 43 games. In 2012, Seumanufagai joined the Wests Tigers. Seumanufagai spent his first season playing NSW Cup, and was a member of the Balmain Ryde Eastwood Tigers side that lost the NSW Cup grand final to the Newtown Jets.

Avagalu Seumanufagai (born 3 June 1991) is a New Zealand professional rugby league footballer who plays as a prop for the Leeds Rhinos in the Super League.