Konstas gets third time lucky! He walks across his stumps and this time he executes the scoop to perfection, hitting Bumrah over fine leg for a four.
No nerves on debut for the 19-year-old. He reverse scoops the next ball, hitting the world's best fast bowler for a six over thirdman.
He uses his feet but fails to connect the wide outswinger followed by a leave.
This is turning out to be an entertaining first hour. Konstas again reverses Bumrah over the slips for another boundary and blocks the last ball.
Bumrah goes for 14 runs in his fourth over as Australia reach 26 for no loss in seven overs.
Konstas has managed to score 19 from 27 balls, playing some risky shots to upset Bumrah's rhythm.