Steve Smith will open the batting when Australia meet South Africa in an upcoming Twenty20 series, selectors said, putting him in the box seat to do the job alongside David Warner at next year's World Cup.It is a remarkable renaissance for the 34-year-old, who was largely overlooked for Australia's starting XI at last year's failed T20 World Cup campaign.READ | Marsh named Australian T20 captain for SA tour, Cummins has wrist fractureSmith, who usually bats at three or four, relaunched himself as an opener for the Sydney Sixers in a short Big Bash League cameo at the end of last season, smacking two sizzling centuries.Chairman of selectors George Bailey said it earned him the right to do the same for the first time at international level in the sport's shortest format, filling a hole left by Aaron Finch's retirement."He'll open in South Africa and I guess he's the one guy out of those multi-format players who is heading across that we wanted to give him that opportunity," Bailey said after announcing the squad on Monday."It was pretty exhilarating, his innings in the Big Bash, and highlighted his skill set and what he can do."The way he played in the Big Bash, that's something we want to see replicated internationally, so it's important that he gets an opportunity to have a crack at that."He was really keen to come across and be a part of that."It gives Smith the chance to cement the spot ahead of the 2024 World Cup in the West Indies and United States.Finch's long-time opening partner Warner is being rested for the three T20s in Durban from 30 August to 3 September.In Warner's absence, any of Mitchell Marsh, Travis Head, Marcus Stoinis or even big-hitting debutant Matthew Short could open alongside Smith.Former captain