I know De Villiers was rested for the trial game against the Kiwi's, but ever since that result I had a feeling they weren't going to be a serious threat in the cup. The match against Zimbabwe confirmed my suspicions.
They really set the tone in the field early when Amla dropped Dhawan and then they missed a fairly simple runout opportunity a few overs later. Unfortunately they then lost Philander and from that moment, the Indians were on top. Parnell's statistics tell the story.
As for the batting, to be bowled out for 177 on that batting surface against an Indian bowling attack that has struggled all summer is embarrassing IMO. They rely far too heavily on Amla, De Villiers and Du Plessis...I have no idea how De Kock is considered in their best XI.
Then again, credit to India for a great performance. Dhawan and Rahane were superb and the bowlers backed it up.
I'm not writing the Proteas off just yet, but considering the loss of Philander and the beating they took to a pretty average Indian side, I can't see how they will bounce back from this.