Pakistan gained a measure of revenge for their ICC World Twenty20 semi-final defeat by securing a 23-run victory over Australia at Edgbaston.
In the first of the two-match Twenty20 series, Umar Akmal starred with a fantastic innings of 64 from 31 balls as Pakistan set a total of 167-8.
After two early hiccups, Australia seemed on course to mount a serious challenge for victory as David Hussey and David Warner put on a third-wicket stand of 52.
But Umar Gul and Saeed Ajmal came to life in the final overs to close out the win with eight balls to spare as Australia's middle and lower order failed to build on the solid foundations.
The two sides were facing off for the first time since Mike Hussey powered Australia to a dramatic win in the last four of the Twenty20 World Cup.
And they seemed set for another successful chase despite Mohammad Aamer (3-27) catching Shane Watson leg before for a duck in the first over.
In the next over, however, when Shoaib Akhtar (0-34), who is back in the international fold after a one-year absence, saw his first five balls dispatched to the boundary by Warner.
The veteran quick was replaced and the decision paid off immediately as captain Shahid Afridi produced a great catch to send opposite number Michael Clarke back to the pavilion for five.
Hussey then took the score to 81 with Warner before he heaved an Afridi (1-26) delivery to Shoaib Malik at cover for 34.
In the next over, Warner was bowled by off-spinner Ajmal (3-26) and when Afridi produced another brilliant catch to dismiss Cameron White (17), the chase was finely poised on 109-5.
Loose bowling continued to hinder Pakistan's challenge, with Mike Hussey lowering the required rate with back-to-back fours.
But the contest turned in their favour when Steve Smith (12) was clean bowled when trying to slog Aamer over the leg side and Gul (2-13) clattered dangerman Hussey's leg stump over for 18.
Gul struck again to send the leg stump of Tim Paine (one) flying out of the ground and when Mitchell Johnson was stumped after being deceived by Ajmal, the contest was effectively over.
Earlier, Umar had arrived in the middle with his side in trouble on 47-4 after Afridi (0) had whiffed on an attempted sweep to be trapped leg before by Smith (1-34).
But the 20-year-old proceeded to blast his side out of the tight spot, with two huge back-to-back sixes down the ground the highlight of his knock.
Umar brought up his half-century in 21 balls, a Pakistan record in Twenty20, before going on to post his career best innings in the 20-over international game.
Shaun Tait was the pick of the Australia bowlers with 2-25, clean bowling Umar to dismiss the man-of-the-match and also clattering the stumps of Abdul Razzaq (seven) with a clever slower ball.
Shoaib Malik and wicketkeeper Kamran Akmal had chipped in with 21 and 23 respectively before Umar came to the crease.