England v South Africa, 4th Test, The Oval, 2nd day
Pietersen hits ton as England grasp control
Makhaya Ntini celebrates the dismissal of Ian Bell in the first over of the day•AFP
Pietersen goes on the pull during his super hundred•Getty Images
Pietersen offered a couple of near-misses - both to Ntini...•Getty Images
With Tim Ambrose, Andrew Flintoff and Paul Collingwood falling in quick succession, it was left to Steve Harmison to pick up the pieces...and he did so in style with 49•Getty Images
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...and he was quickly into his stride...•Getty Images
...but moved through to his 14th Test hundred and his first as England captain•Getty Images
And to cap a fine day for England, James Anderson trapped Graeme Smith lbw in his first over•Getty Images
But Ntini removed Cook as England began to wobble•AFP
Ntini took his first five-wicket haul since January 2007 as England slipped•Getty Images