 GPS won the 1942 and 1943 "A" Grade Premierships (Keith Horsley Memorial Trophy) against Eagle Junction and University respectively, but had to wait until 1961 to win the Hospital Challenge Cup, coached by the former GPS player and later Queensland and Australian coach, the late Bob Templeton.The club won the premiership again in 1972 and for a fifth time in 1996, when the A Grade team upset Souths 12-6.After a 22-year drought, GPS won the premiership for a sixth time in 2018.