Speckman replaces Geduld in Vegas
South African have called up wing Rosko Specman in place of the injured Justin Geduld for the next leg of the Sevens World Series, in Las Vegas.
The three-day United State event kicks off this coming Friday and South Africa are the defending champions.
Geduld suffered a hamstring injury over the weekend at the Wellington leg of the World Series, where the Springbok claimed third spot – after a strong finish in their play-off match against Scotland.
Specman (Pumas) has one World Series tournament under his belt.
South Africa head the World Series standings with 76 points at the halfway stage and are seven points clear of defending Series champions New Zealand, who moved into second place.
The top four sides on the final standings in May will gain automatic entry into the Rio Olympic Games in 2016.
Reflecting on their showing in New Zealand, Powell said he and his management team will work hard on the team's mental preparation during the next few days.
"We were not as sharp and probably not as mentally focussed as we would have liked to be on the first day in Wellington," Powell said.
"We did much better on the Saturday and I am glad we finished the tournament with a good win against Scotland in the play-offs [for third place].
"The guys have to work hard in the next few days to build on the momentum we gained against Scotland," said Powell.
South Africa will face hosts USA, Portugal and Japan in the pool stages of the Las Vegas tournament.
