Tameilau is the son of Moses Similai, who played rugby internationally.[2]
Amateur career
Tameilau played for U.S. youth teams, and played in the 2007 U19 World Cup and 2008 Junior World Championship.[3] Tameilau attended San Francisco City College, then went on a religious mission, then played American football with the NCAA Division II West Texas A&M Buffaloes.[3]
Professional career
In 2015, Tameilau decided to again focus on rugby. He played for SFGG in the Pacific Rugby Premiership, and then trained with the Taranaki Rugby Academy.[4] In early 2016, he signed for the San Francisco Rush, North America's first professional rugby competition.
In early 2016, Tameilau was predicted to be the breakout player of the year for the U.S.[3] Tameilau debuted for the U.S. national team in the 2016 Americas Rugby Championship.