Rugby is in David’s blood as his father (Moses Similai) was an International class rugby player and has been coaching rugby for the Pen Green Beavers since 2004. All of David’s brothers (Andrew and Moses) also play rugby.
David started his rugby career with the Peninsula Green High School Rugby Club (Woodside, CA) in 2004, playing 4 years for Pen Green under Head Coach Paul Negus, assisted by Coaches Moses Similai, Bob Benson and George Richards. David was a team leader on the Peninsula Green Beavers Rugby Club playing most of his games at number 8, but also as a 2nd Row, Flanker and Center. David earned starting positions for the Bay and Northern California All Stars (Pelicans) during his playing years as a Pen Green Rugby player, and also played for the USA U18, U19 and U20 teams where he played in several International Matches including going to Kenya for the Junior World Cup in 2008.
David graduated from Serra High School (San Mateo, CA) where he was an outstanding football player. He went to San Francisco City College where he starred in football as a defensive end. David then went on his Mission for the Church of Jesus Christ of Later Day Saints (Mormon). Upon returning from his mission David played football for West Texas A&W. David came back to the Bay Area where he played for SFGG on the Super League teams, and playing for SFGG against the touring Tongan National team. USA Rugby awarded a scholarship to David in 2015 to attend and play for Taranaki Rugby Academy, New Zealand for 6 weeks.
He started playing for the Life West College Gladiators in 2016 under head coach Adriann Ferris, where David is a starting at Flanker and Number 8. David is known for his nimble acrobatic running (He is a big man, but he runs likes a half back) as well as his ferocious tackles and powerful rucking.