Sam Konstas has missed out in his last innings before a likely Test debut, bowled for a third-ball duck in the Sydney Thunder's BBL clash with the Sixers.

Playing for the first time since being called into Australia's Test squad, Konstas went to cut a shot ball from Akeal Hosein and chopped onto his stumps at ENGIE Stadium.

The 19-year-old's duck came after he set the BBL alight on debut five days earlier, smashing the fastest 50 in the Thunder's history against Adelaide.

Konstas is expected to debut for Australia on Boxing Day at the MCG, after being called into the Test squad in place of Nathan McSweeney.

He has already made a significant impact this summer, becoming the youngest player to hit twin tons in the Sheffield Shield since Ricky Ponting.

The right-hander also smashed 107 against an Indian attack missing Jasprit Bumrah earlier this month, and a timely 88 against Western Australia in the Shield.

Konstas will face one of the toughest initiations to Test cricket if he debuts at a sold-out MCG, with Bumrah having troubled almost every Australian batter this summer.

His 53 career wickets at 17.15 in Australia have come at the best average of any overseas bowler who has taken 50 or more wickets.