For Brett Lee or Simon Katich, Wednesday night's Big Bash League semi-final could be the final game one of them plays in this country.

Sydney Sixers pace ace Lee said he had not - consciously, at least - thought the showdown with the Perth Scorchers could be the last time he bowls a ball in Australia, while Katich will swap the orange of his BBL team for that of AFL club Greater Western Sydney.

Brett Lee, 37, is the only fast bowler who has broken the 150km/h mark every year over two decades. Credit:Getty Images

Lee, 37, is the only fast bowler who has broken the 150km/h mark every year over two decades and his contribution to the Sixers this summer as both a leader and fast bowling spearhead was a crucial factor in the rejuvenation of the franchise.

While it was expected he would be a wanted man by Indian Premier League teams in the forthcoming auction, Lee refused to suggest (should Perth win) he could possibly be unleashing his final thunderbolt at the SCG.