Mitch Marsh of Australia walks from the field after being dismissed for no score by Vernon Philander of South Africa during day two of the First Test match between Australia and South Africa at the WACA on November 4, 2016 in Perth, Australia. (Photo by Paul Kane/Getty Images)

Several ex-players have slammed the Decision Review System following Mitch Marsh's dismissal during day five of the first Test against South Africa.

Marsh was the fifth wicket to fall for the innings, leaving Australia 5-196, chasing an unlikely 539 for victory.

Marsh was initially given not out after being struck on the pad by Kagiso Rabada. However, upon review by the South Africans, he was given out, despite the ball appearing to be heading well down the leg side in real time.

But hawk-eye ball tracking deemed that the ball would have hit the leg stump, resulting in the decision being overturned.

Former Test opener Chris Rogers, now a commentator with ABC Radio, was left shocked by the decision.

“I really don’t know about that,” Rogers said.

“That ball is reverse swinging and then when it continues on after hitting the pad it looks like its seamed and straightened in the DRS.

“I’m turning around to Dirk Nannes and Simon Katich and they’re both shaking their head as well.”

His thoughts were also echoed by Channel Nine commentator, Mark Taylor.

“I’ve got to say, sitting at the back of the commentary box, I thought Mitchell Marsh would be fine to be totally honest,” Taylor said.

“He was given not out so the technology has to prove he was definitely out to overturn the decision.

“That looks to me at best it is going to clip the stumps.

“I think he’s very unlucky. The way the ball impacted him on the half volley, it looked to me like the ball straightened rather than kept going on it’s original angle.”