Younus Khan marked his return to international cricket with a half-century, but his display was overshadowed by Lonwabo Tsotsobe's four-wicket haul as Pakistan collapsed to 203 all out in the first one-dayer against South Africa in Abu Dhabi.

The former captain, back in the fold after his ban and subsequent axing from the team earlier this year, hit 54 from 75 balls and shared a 114-run partnership with Mohammad Hafeez (68).

They laid a solid platform, taking their team to 140 for one at one stage, before Tsotsobe (four for 27) intervened with three wickets in quick succession to bowl out the opposition with an over to spare at the Sheikh Zayed Stadium.

The Pakistanis lost Asad Shafiq (19) early on after winning the toss and electing to bat first, but Younus and Hafeez dug in.

Their progress did come with some early luck, though, when Jacques Kallis failed to hold a drive from the opener at short cover, Hafeez on five at the time.

The pair put on 50 in 63 balls, before the 100 came up in the 23rd over.

JP Duminy was then unlucky not to dismiss the number three batsman for 34, umpire Asad Rauf turning down a strong leg before appeal.

Hafeez raised his sixth ODI half-century in the next over as the duo continued to build.

The opener continued to ride his luck along the way, though - an edge just eluding Kallis at short third man and another miscue falling narrowly short of Hashim Amla running in the outfield.

But his good fortune soon ended with a cut shot off Johan Botha flying to Charl Langeveldt running to his right on the off-side.

That sparked a middle-order collapse, and, after Younus brought up his fifty from 67 balls, he was out lbw to Botha.

Tsotsobe's reintroduction into the attack in the 38th over spelt further trouble for Pakistan, with the left-armer sending Misbah-ul-Haq (14) and Shahid Afridi (one) on their way - the captain again holing out irresponsibly with an attempted big hit ending down the throat of Graeme Smith at mid-off.

The Warriors paceman grabbed a fourth wicket in his next over, only this time he had an outstanding AB de Villiers catch to thank after the wicketkeeper had to change direction to snap up an Abdul Razzaq (two) inside edge.

Fawad Alam, the last of the recognised batsmen, was bowled by Langeveldt for nine as Pakistan scratched their way to 203 all out.