Pietersen, is a South African bowler who is on the county circuit as a Kolpak player.
He gave his best performance for Northamptonshire in the C&G Trophy clash against Ireland in 2005.
In eight overs of left-arm swing bowling he took seven for ten, including five wickets in 12 balls. Of those ten runs conceded, six were wides.
However, Pietersen played very few games for the county, and his remaining performances were limited to three championship games and two totesport league appearances.