David Wiese, South Africa all-rounder, has been added to the squad for the first two One-Day Internationals (ODIs) against England after Albie Morkel suffered a back spasm during the recently-concluded Momentum One-Day Cup.

The injury has ruled him out for the first two ODIs. Even as the MRI scan reveals damage to the vertebrae in his lower back, Morkel can be fit to play for the last three matches of the series.

Choosing to remain positive, Morkel told on Monday (February 1), "I think I have been playing some of the best cricket of my life in the last year and a half. If you cannot accept setbacks like these, remain positive and move on, the sporting world will be a dark place."

Earlier, Marchant de Lange was called in as a replacement for the injured Kyle Abbott. Despite the twin injuries, JP Duminy doesn't feel the South African side is any weaker.

"I don't think we're weakened. I think the replacements are good enough to stand in for those players. It's not an interruption in any way for us. We know what's needed as a squad and it's important for us to stay unified as a team, no matter who the personnel are.

"The confidence from the one-day cricket point of view has been pretty good... We've won our last two series. But we know this is a tough challenge that faces us, and that England have also been playing really well in this format," he added.

Meanwhile, things aren't any prettier on the other side of the camp. Jason Roy, England opener, skipped Monday's practice session after suffering back spasm. He will undergo a fitness test ahead of the first ODI in Bloemfontein on Wednesday.