Sam Konstas continues to flag his potential as a star of the future, writing his name alongside Ricky Ponting in the history books with another Sheffield Shield century.

Teenaged opener Sam Konstas has announced himself with a second century from as many innings in the Sheffield Shield clash between NSW and South Australia.

While the Australian team is considering an opening batting partner for Usman Khawaja in the upcoming Border-Gavaskar series, a future top-order star is emerging at Sheffield Shield level. New South Wales teenage opener Sam Konstas blasted his maiden first class hundred against South Australia at Cricket Central on Tuesday.

Selectors could be forced to choose between an extra bowling option or specialist opener if Cameron Green's back injury forces him out of the Australian summer.

Australian selectors will provide an early steer on potential replacements for Cameron Green when they unveil an Australia A squad within the next week.