Having made his debut in Dave Furner’s final match as coach, he has missed only two games for Leeds and scored two tries in 19 appearances.
So what will the former from West Tigers and Cronulla Sharks forward bring to Rhinos’ side once Betfred Super League resumes on August 2?
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With 118 NRL games under his belt, Seumanufagai is an experienced front-rower with a high work-rate.
He was brought in to give Rhinos some go-forward and has added size and physicality to a relatively young pack.
At 29 he is approaching his peak as a front-rower and, after being mainly used off the interchange bench in the NRL, he has become an established member of Rhinos’ starting side.
Yet to come, Rhinos will hope, but he was a try scorer in the crucial win at London Broncos last August which secured Super League survival and also touched down when Warrington were crushed 36-0 at Emerald Headingley in February.
Still a relative Super League rookie, Seumanufagai was ever-present for Wests in the 2016 NRL campaign.
Seumanufagai is out of contract at the end of next year and will inevitably attract NRL interest if he maintains his early Rhinos form.
At more than 18 stone (115kg) he is a big man and proposed new laws to keep the game moving - including the ‘six again’ rule and abolishing scrums for the rest of this season - might impact him more than most.
The New Zealand-born prop has done exactly the job Rhinos signed him to do.
He strengthened Rhinos’ struggling middle unit last year, defensively and with the ball and it’s no coincidence half the points Leeds have conceded in 2020 came in the one game he has missed.
A faster game and packed schedule will be tough for players in his position, but Rhinos’ management will want him on the field as much as possible.
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