The men's first team play in the Buller Rugby Football Union premier club competition.

Originally the club participated in the West Coast Rugby Football Union competitions.

With the logistical difficulties of playing teams from the lower West Coast the Westport club became instrumental in the founding of the Buller Rugby Football Union in the Northern part of the West Coast region in 1892 and have participated in Buller provincial competitions since this time.

The Westport RFC first team won the Buller Rugby Union club championships 8 years in a row from 1963 to 1970 which at the time was a New Zealand record for most consecutive wins of a provincial club championship.

The record stood for many years until recently beaten by Paeroa West of the Thames Valley Rugby Football Union who won 9 in a row.