The decision has reportedly been taken following Mishara’s recent struggles with the bat, as selectors look to strengthen the top order ahead of the high-stakes encounter.
The match is scheduled to be played at the Pallekele International Cricket Stadium at 7.00 pm today.
Sri Lanka and Australia are set to face each other in a T20 International after a lapse of four years, adding further significance to the contest.
A victory for Sri Lanka tonight would significantly boost their chances of securing a place in the Super 8 round of the tournament.