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New Zealand legend Richard Hadlee joined West Indies great Michael Holding in questioning the legality of Pietersen's experimental strokeplay. "It has created some serious issues in regards to the spirit of the game because the fielding side are dealing with a right-handed player and set the field accordingly," Hadlee told the London Daily Telegraph.
Buchanan has little doubt Pietersen gained an advantage but spoke of the need for cricket to constantly reinvigorate itself, and for authorities to be wary of legislating against an idea that proved good fun for spectators.
"It is a logical extension of the reverse sweep," Buchanan said. "The lawmakers have to be mindful of innovation versus convention, potentially what is good and entertaining and what is prejudicial to the game.
"Once it's been done successfully, there are plenty of other strong and powerful and skilled players who can actually do that. He has just set a standard at the moment that no one else has been prepared to try in a game. Others might have been prepared to practise it but he has actually taken the next step, had the courage to take that risk."