They competed in the National Rugby League's 2003 Telstra Premiership and finished the regular season in 6th place.
The Warriors then came within one game of the grand final, losing to eventual premiers the Penrith Panthers.
The Warriors launched a new jersey design in 2003, finally removing completely the blue and white colours the owners had inherited when the purchased the company.
The Warriors played a pre-season trial match against the Penrith Panthers in Invercargill on 28 February.
This included Motu Tony and Jerome Ropati at the Marist Richmond Brothers, Mark Robinson at the North Harbour Tigers and Richard Villasanti at the Canterbury Bulls.