A new-look Pakistan sealed a comfortable 23-run victory against South Africa in the first one-day international in Cape Town.
Debutants Anwar Ali and Bilawal Bhatti starred for the tourists by sharing an eighth wicket stand of 74 to set a victory target of 219 for the Proteas.
The newcomers then shared five wickets against the home side, who were bowled out for 195 runs at Newlands as Pakistan's bowling attack ripped through them with ease.
Jacques Kallis top-scored with a half-century on his return to the international 50-over format for the first time since February 2012 for South Africa.
But Bhatti claimed 3-37 and he also contributed 39 runs with the bat, while fellow debutant Ali added an unbeaten 43 and figures of 2-24 in a man-of-the-match display.
Ali and Bhatti were thrown together for the eighth wicket and combined for 74 runs that ultimately took the game away from the hosts.
"I am very happy, especially as the two youngsters set it up. The plan was to negotiate the new ball, then accelerate but we kept losing wickets at the wrong time. It was not a good total but the bowlers did really well," said captain Misbah-ul-Haq.
South Africa's reply got off to a poor start when openers Graeme Smith and Hashim Amla were dismissed in consecutive overs to leave the hosts on 20-2.
Amla was bowled in the third over for just three runs as Junaid Khan struck, while Smith (12) fell in the next over to Mohammad Hafeez, although there was more than a little controversy about the decision.
Smith's attempt to cut Hafeez's delivery came back off the gloves of wicketkeeper Umar Akmal, with the ball knocking into the stumps just as Smith raised his back foot. It was a tight call for the third umpire but when it came it went the way of the tourists.
Kallis then took the field in a one-day international for the first time in nearly two years and he paired with Quinton de Kock for a 42-run partnership before the latter fell, bowled by Bhatti for 19.
AB De Villiers (10) lasted five overs before he was bowled by Shahid Afridi to leave South Africa on 79-4 and Pakistan then took the crucial wicket of Kallis, who fell to Ali on 50, the ball clipping off the bottom of his bat and into the stumps.
David Miller (four) and Vernon Philander (14) failed to add much to the total and the loss of JP Duminy for 49 was the beginning of the end, with tail-enders Morne Morkel and Dale Stern duly mopped up by the impressive Bhatti.
Earlier the Proteas attack had made it hard for the tourists with Steyn claiming 3-33 and Morkel 3-9.
Openers Nasir Jamshed (24) and Ahmed Shehzad (35) failed to build on strong starts, and after Afridi chipped in with 26 the scene was set for Ali and Bhatti to combine for their decisive eighth-wicket stand.
"The bowlers did a brilliant job in getting them seven down but we let it slip at the end," admitted South African captain AB de Villiers.