Smith continues his love affair with the MCG. He takes a single off Bumrah to complete his half-century from 71 balls.
This is his sixth fifty at the MCG, to go along with four centuries.
Alex Carey drives the last ball square on the off-side for a couple of runs.
Sundar from round the wicket to Smith, who keeps out the first two balls before clipping the third ball off his pads for a single.
Carey gets a thick outside edge as he looks to defend for a single to short thirdman.
Smith rocks back to cut the spinner behind point for a couple of runs and keeps out the last ball.
Siraj comes back into the attack as he replaces Bumrah. Carey pushes the first ball towards point for a single before Smith makes most of some width, to hit the pacer square on the off-side for three runs.
Another single for Carey before Smith launches the pull shot over square leg for a six.