Neither Pistorius' coach nor his agent knew about the track visit until afterward, Van Zyl said.
Pistorius will run the third leg of four with LJ van Zyl replacing the injured Mogawane.
Four minutes later, Piet Van Zyl kicked-on and out-sprinted Girvan Dempsey for Namibia's second try.
Agent Peet van Zyl and coach Ampie Louw couldn't be reached, while Pistorius' cellphone went straight to voicemail.
Deon Kotze (33) and Ian van Zyl (31) hit late runs for Namibia to edge them towards their total.
Van Zyl also said Pistorius' desire to start training again did not show disrespect to the family of Steenkamp.
Angelo, an American overseeing North American production who will lead Latin American operations and South African Johan van Zyl.
Angelo, another American, will lead Latin American operations and South African Johan van Zyl will take charge of the African region.
He was tied with fellow South Africans Jaco van Zyl (67) and George Coetzee (70) plus Chile's Felipe Aguilar, who also carded 68.
Van Zyl said he then called Ampie Louw, the sprinter's coach, and told him to jump in his car and get to Pistorius's house.
"He might get up this morning and call (coach) Ampie (Louw) and say he wants to be at the track at one o'clock, " Van Zyl said.
That rebirth started in earnest in 2010 with the hiring of van Zyl, tall and no-nonsense, the descendant of an Anglican minister who immigrated to Malawi.
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Arthur confirmed he had resigned from his post on Wednesday citing differences with Cricket South Africa as the reason, with Corrie van Zyl installed as caretaker coach for the India tour.
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Van Zyl disputed that and said neither he nor Ampie Louw, Pistorius' coach and the man who controls his training sessions, were present at the track on the day the photograph was taken.
Van Zyl had the pedigree and the guts: She led the integration of Pretoria High School for Girls, the first all-white school in the region to accept black students as the veil of apartheid lifted.
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Pistorius' management team was expecting the photo to be published, Van Zyl said, after Pistorius had told them he had visited his track with some Australian athletes on the day a little under two weeks ago.
It was the first time Pistorius had put his blades on since he shot dead Steenkamp in his home in the early hours of Feb. 14, his agent, Peet van Zyl, told the AP later on Thursday.
South Africa's Ernie Els hit the round of the day, carding a 65 to leave himself two shots off the lead, along with compatriot Jaco Van Zyl - who recorded five birdies and an eagle on his back nine - and Scotland's Richard Ramsay.
The move is meant to help Pistorius focus on the legal proceedings and "help and support all those involved as they try to come to terms with this very difficult and distressing situation, " said Peet Van Zyl of Pistorius' management company, In Site Athlete Management.
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