With his latest move, Eluemunor followed in the footsteps of Osi Umenyiora, who also has Nigerian heritage, was born in London and moved to the United States aged 14.
He played in that first London game in 2007 before helping the Giants win the Super Bowl that season, and again four years later.
Umenyiora wore number 72 and Eluemunor sought his blessing to wear the same number for the Giants.
It is highly unlikely Eluemunor will emulate Umenyiora by reaching this season's Super Bowl, though. The Giants go into Thursday's Thanksgiving game at Dallas with a 2-9 record.
Despite being nicknamed 'London' at college, Eluemunor has now lost his accent but remains a big Arsenal fan and sports a Union Jack tattoo with 'bred' beneath it.
And like Umenyiora, he has returned to the city of his birth to help grow the game in the UK, with a third annual football camp planned for the off-season.
"Growing up in London, I wasn't the best at school," said Eluemunor. "But sports was the one thing that kept me in check. I feel like it's the same for the kids at my camp.
"Flag football being in the Olympics is really cool for kids around the world, and I honestly think it's a life-changing game."
Eluemunor has also revisited the block of flats where he discovered the sport.
"It made me grateful for all the struggle I had to go through," he added.