Utai was a Berala Bears junior and came through the development squads at the Canterbury-Bankstown Bulldogs. In 2000, he started the year in Jersey Flegg, but his form warranted promotion to the Reserve Grade side and he played in 16 matches including scoring two tries in the Grand Final victory.
Canterbury- Bankstown Bulldogs
Making his NRL debut in 2002 NRL season, he scored 13 tries in 21 appearances and played in only 2 losses all year. However, the club did not play in the semis because of salary cap breaches. He was named the Dally MRookie of the Year. In 2003, he scored 21 tries in 27 games, including scoring triples in three consecutive games. Near the end of 2004, Utai scored 11 tries in the space of 7 games. He was a member of Canterbury's Premiership-winning team, playing in the 2004 NRL grand finalon the wing in their 16-13 victory over the Sydney Roosters, scoring two tries in the match. In a 2006 match, Utai became the first player that season to be sent off, for a swinging arm on the Wests Tigers' Stuart Flanagan. He was suspended for five weeks. He played in the club's 2006 preliminary final defeat against the Brisbane Broncos where he scored a try in a 37-20 loss. At halftime, Canterbury had led the match 20-6. In the 2007 NRL season, Utai missed nearly the entire year through injury, but returned in 2008 and made 12 appearances as Canterbury endured a horror year on and off the field which included star player Sonny Bill Williams walking out on the club midway through the season. Canterbury would finish last in 2008 after winning five games all year. In 2009, Utai spent most of the season playing for the Bankstown City side in the NSW Cup. He became the only Canterbury-Bankstown player to win five premierships across all grades when Bankstown City won the grand final that year.
He originally signed the Crusaders Super League club for 2010 but failed to recover from a knee injury. Instead Utai joined NSW Country Rugby League Club, Young in Group 9. Utai was then released from Young and joined the Auburn Warriors. He would have signed with the Wests Tigers but Welsh Super League club Crusaders demanded a compensation fee of $130,00.
Wests Tigers
Utai joined the Wests Tigers in 2011, making his first appearance in the first round of the season. He was a regular on the wing throughout the season, and was re-signed for 2012, and signed a one-year extension in October 2012.
Auburn Warriors
In 2017, Utai signed on with the Auburn Warriors in the Ron Massey cup. On 24 September, he scored the only try for Auburn in their Ron Massey Cup grand final defeat by The Wentworthville Magpies.
Representative career
Utai was selected to represent the New Zealand National Team on four occasions between 2002 and 2005, all matches against Australia. Utai is of Samoan descent and made himself available for Samoa's2008 Rugby League World Cup campaign. He was named in the Samoa squad, and went on to score two tries in his three appearances on the wing.
