✅  In 1949 the club changed its name to the more representative  Sutherland Shire Casuals SFC
 
✅  In 1966 the club was granted a liquor license and duly opened a social club on the southern side of the ‘Fiveways’ at Miranda

✅ The club were perennial semi-finalists throughout the late 70’s and 80’s, during which time they again won the Ampol Cup (1981) and also achieved another Grand Final success memorably coming from behind to secure a 3-1 win against Melita Eagles at St George Stadium (1986).
 
✅  In 1984, the NSL was to be expanded by the addition of four Sydney clubs, with Sutherland tipped to secure the fourth and final berth. In perhaps the greatest disappointment of this period, the club was edged out of contention by the newly formed Penrith City, who failed to live up to expectations and folded two years later when relegated from the NSL.

✅ in 1988, the Sharks, in what was quite a coup, hosted a friendly with the Socceroos in a warm-up for the Bicentennial Gold Cup drawing what was then generally considered a ground record of 4,500 spectators.
 
✅ After staving off relegation for a few seasons the club was relegated for the first time in its long history in 2002. This saw a change in the committee backed by Major sponsor John Hills (PIPE KING) with an improvement on and off the field and in 2006 a bold bid to enter the new 10 team elite Premier League was successful.
 
✅ The Sharks began to build a formidable outfit and narrowly missed the semi-finals in 2007 but won the reintroduced Leader Challenge Cup against St George.
 
✅ In 2009 under coach Robbie Stanton the club swept all before it winning firstly the prestigious NSW Tiger Cup, Leader Challenge Cup, and became Premiers beating Marconi 4-1 in the Grand final at Penrith's CUA stadium. The club had re-established itself as a powerhouse in State Football.