South Africa ended day one of the second Test against Australia firmly in control after bowling the hosts out for just 85 and moving to 171/5 by the close.
It took just six balls for Vernon Philander to grab the first of his five wickets on a grey day in Hobart as David Warner flashed at a wide half-volley only to nick off for one.
Kyle Abbott came into the team for the injured Dale Steyn and he too claimed a wicket with the last ball of his first over as he trapped Joe Burns (1) leg before.
Usman Khawaja (4) was next to go tucked up by a shorter ball from Philander that flew at a comfortable height to Hashim Amla at first slip, Australia were 8 for 3.
Voges got a pearler from Philander first up and had to go for a golden duck.
Callum Ferguson replaced Mitchell Marsh in controversial circumstances and failed to make the most of his first opportunity at bat on his debut.
Ferguson was run out for 3 after some brilliant fielding from substitute Dane Vilas, on the field for Philander who went off for treatment after colliding with Aussie skipper Steve Smith.
Australia had slumped to 17 for 5 representing their worst score for five down since 1936 when Don Bradman's Baggy Green were 16 for 5 against England at the Gabba.
Kagiso Rabada got in on the attack soon after striking Peter Nevill (3) on the pads and immediately going up for the appeal, Aleem Dar turned the Proteas down but after a moments thought Faf du Plessis reviewed and DRS dealt Australia another blow as the keeper had to walk.
Philander returned to the field and accounted for the second of Australia's debutants as he castled Joe Mennie through the gate for ten.
Mennie was the only batsman apart from Steve Smith to make it in to double figures.
Smith could only look on in horror from the other end as his team fell apart.
Abbott's swing undid Mitchell Starc (4) who was caught by JP Duminy in the corden.
Josh Hazlewood would hit a couple of boundaries before he became Abbott's third victim, Amla taking a catch to his right at first slip that keeper Quinton de Kock should have had covered.
De Kock made up for that though diving across in front of Amla to end the Australian innings on 85, their lowest total since 1984, and secure Philander's tenth test five for.
Steve Smith was left high and dry on 48 not out and was the only Australia batsman to show any application at he crease.
Philander ended with figures of 5 for 21 while Abbott managed 3 for 41.
In reply the Proteas openers made it to tea safely and halved Australia's lead, they were 43 without loss at the break.
After tea Mitchell Starc stamped his mark on the game with a quick-fire triple strike removing Elgar (17), Cook (23) and Duminy (1) in the space of three overs.
Skipper Du Plessis (7) and Amla added 30 before the captain was trapped leg before by Hazlewood.
Amla settled in to a partnership with Temba Bavuma adding 56 for the fifth wicket before Hazlewood dismissed him for the third time this series three runs short of a half century.
The fall of Amla's wicket brought master blaster De Kock to the wicket and the left hander would not pull his punches scoring 28 of the 39 runs he and Bavuma (38 not out) added before the close.
Mitchell Starc was the pick of Australia's bowlers with figures of 3/49.
South Africa lead by 86 runs at the close with five first innings wickets in hand and despite the poor weather forecast we were treated to a full day's play today and a result looks likely even if rain delays do come.