Perhaps the greatest innings ever played in an England shirt.
Pietersen came to the crease with England 68-2 in their first innings, batting after India's effort of 326.
England had lost the first Test in Ahmedabad comprehensively, succumbing dramatically to spin bowling, and when Pietersen walked to the crease, the match, the series and perhaps even the England team had reached a critical juncture.
The pitch was by no means easy to bat on, but Pietersen paid no regard to this and masterfully took apart the Indian bowling attack. One bowler at a time, he pummelled the hosts into submission.
It was the beginning of England's historic series comeback and eventual victory, an innings that staved off a winter of misery and Pietersen's ultimate riposte to those who said he should never have played again following the text-gate saga.
This innings is unforgettable.