Travis Head and Mitch Marsh have clubbed a world record T20 international powerplay score with a brutal display of hitting as Australia launched their white-ball UK tour by thrashing Scotland with more than half their overs to spare.

Head made 80 in 25 balls and Marsh 39 in 12 as the pair racked up 113 in the six over powerplay, surpassing the 102 made by South Africa against the West Indies last year.

That enabled Australia to overhaul the 9-154 Scotland had made in the first of three T20s at the Grange, Edinburgh, in 9.4 overs.

But the assault came after Jake Fraser-McGurk’s long-awaited debut had ended in failure, the young gun being caught for a third-ball duck holing out to mid-wicket.

Marsh prodded Brandon McMullen’s next ball just past gully’s outstretched right hand, but if that start gave Scotland hope of an upset it was swiftly dispelled.

Head took three boundaries off the next over, two fours and two sixes off the third, and two fours and a six off the fourth taking him to 47 off 16 balls.

At this point Marsh had made eight from five, now the skipper, standing in for the rested Pat Cummins, joined the fun. The fifth over he hit 6,6,4,6,4,4.

Next over, it was Head’s turn again. That went 4,6,4,4,4,4, in the process equalling Marcus Stoinis’ Australian record for a fastest T20i 50, reaching it off his 17th ball.