His sixteen-year club career was played at four Sydney clubs
New South Wales Rugby League premiership – the
St. George Dragons,
Canterbury Bulldogs,
Eastern Suburbs Roosters and
North Sydney Bears. Jarvis was an avid Rugby League player in the Juniors for Arncliffe Scots, and was graded with the
St George Dragons in 1976, playing eleven seasons with that club as a forward. He played in the
1985 Grand Final for the Dragons, and remained with the club until the end of
the 1986 season. Jarvis then spent a year in Britain, playing with
St Helens R.F.C. in 1986–87. When Pat returned to Sydney in 1987, he joined
Canterbury and went on to regain his State of Origin jersey. However, Jarvis was injured during the middle of the season and a full knee reconstruction meant he missed the second half. In 1988, Pat joined
Eastern Suburbs and played thirty-seven games for the Rooseters in the next two seasons. Although not back to his best yet, Pat was awarded Clubman of the Year in 1989. In 1990, he joined
North Sydney and played 44 games for the Bears in 1990 and 1991. Jarvis was later captain-coach of Mudgee. ==Representative career==