England batsmen Pietersen sparked a debate last month when, before the bowler reached his delivery stride, he switched to a left-hander's grip and stance and twice hit New Zealand's Scott Styris for six in a one-day international.

The Marylebone Cricket Club (MCC), custodians of the game's laws, quickly convened to discuss the tactic and announced that the innovation conformed to the existing rules.

However, Tendulkar, a batsmen who has always combined a classic technique with wristy innovation, feels the approach needs more thought.

"I think they will have to look at it far more closely than has been done; it changes the laws," he told Reuters on Sunday.

"It's about LBW decisions, how are you going to decide which is off stump and which is leg?

"My opinion is that when a right-handed batsman takes his guard it doesn't matter which shot he plays, he's a right hander and the field can be set accordingly.