Andrew Sincock began his first grade cricket career for Kensington Cricket Club in the South Australian Premier Cricket Competition at the age of 15 during the 1966/67 cricket season.
In a grade cricket career from 1966/67 to 1994/95 Andrew took 762 first grade wickets. He is 3rd highest wicket taker overall in SACA.
Andrew Sincock made his first class debut for South Australia in 1974/75 and played 39 first class games taking 98 wickets at 38.94 including four 5 wickets hauls.