Boks lose another openside flank
Smit sustained the injury while attempting a tackle during a training session with the Springboks in London on Monday.
The 23-year-old Smit will be replaced by Uzair Cassiem, the Free State Cheetahs loose forward, who impressed during his two weeks with the Springboks.
The Boks – who play England, Italy and Wales in their remaining matches on tour – are already without Francois Louw and Jaco Kriel, who were both ruled out before the tour started.
It is another blow for South Africa after Jesse Kriel was ruled out of the three Test Matches with a leg injury sustained during Saturday's 31-31 Wembley draw with the Barbarians.
Kriel has been replaced by Rohan Janse van Rensburg for the remainder of the tour and coach Allister Coetzee must now find another replacement for Smit.
Coetzee is under pressure following South Africa's recent poor run of results, including a record 15-57 defeat by New Zealand last month.
They needed two late tries to force a draw with the BaaBaas and will be underdogs when they take on England at Twickenham this weekend.
However, Coetzee is boosted by the arrival of several of his more experienced players, including JP Pietersen, Bryan Habana and Warren Whiteley, who joined up with the squad on Sunday.
"A week is a long time in rugby. We feel like we started last night, we had a full complement of the Springboks team at our first team meeting," Coetzee said.
"You get the feeling it's a big week, the start of the so-called official tour. We are raring to go.
"We are definitely the underdogs, we are playing the second-best team in the world who are on a nine-game winning streak.
Agence France-Presse
