(CNN) -- Man-of-the-match Mitchell Johnson delivered the final blow as Australia beat South Africa by 162 runs in the first Test at the Wanderers in Johannesburg on Monday.
Man-of-the-match Johnson celebrates one of his four second innings wickets in Australia's first Test win.
Australian strike bowler Johnson claimed another four wickets in the second innings for 112 runs -- his match return was eight for 137 -- and he also contributed 96 not out with the bat.
South Africa, faced with a formidable win target of 454, started the final day feeling reasonably confident of at least holding out for a draw in the first encounter of a three-Test series.
The tourists, who lost a home series against the Proteas earlier in the season, had other ideas with Peter Siddle weighing in with three wickets as Australia triumphed just after tea as South Africa were all out 291.
Hashim Amla (57) and Jacques Kallis (45) were the only batsmen to offer any real resistance after the hosts resumed at 178 for two.
Amla reached his half-century in 103 balls, but he fell when attempting to flick Siddle through the leg side -- Phillip Hughes taking a straightforward catch at short square-leg.
AB de Villiers was next to follow when Billy Bowden sent him on his way after being trapped leg before by Andrew McDonald for three while Johnson then wreaked havoc with the new ball.
Kallis, attempting to drive, only succeeded in playing on as South Africa slumped to 247 for five at lunch.
JP Duminy was first to go on the resumption when his attempts to fend off a Siddle bouncer saw him held at second slip for 29 before Morne Morkel was caught for two following and attempted pull off Johnson.
Wicketkeeper Mark Boucher (24) was clean bowled when a Ben Hilfenhaus ball cut back off the pitch and victory came eight deliveries after tea.
Paul Harris was caught at short-leg by Simon Katich off Siddle for eight, before Johnson bowled Dale Steyn for six to seal the win.
Siddle returned three for 46 in the second innings, while Hilfenhaus picked up two for 68. The next Test begins in Durban on Friday.
Thilan Samaraweera became only the sixth man in Test history -- and the second Sri Lankan -- to score double hundreds in successive Tests when he cracked a magnificent 214 against Pakistan in Lahore.
He put on 207 in a fifth-wicket stand with Tillakaratne Dilshan (145), but, once Samaraweera was run out after a mix up, Sri Lanka slumped from 507 for five to 606 all out with pace bowler Umar Gul grabbing six wickets.
Pakistan's openers made a bright start to the chase and the hosts had reached 110 when Salman Butt was run out just two balls before the close in Lahore.
The 31-year-old Samaraweera had amassed 314 in the drawn first Test in Karachi and emulated team-mate Kumar Sangakkara who scored consecutive double centuries against Bangladesh.
"I am really pleased to get to that exclusive club. I have worked really hard over the last two years and it certainly has helped me," Samaraweera told media.