If India and Australia reach the final of the World Cup, fast bowler Brett Lee would unleash a special delivery at Sachin Tendulkar.

"The 'spit rock', which I learnt from my brother Shane, could be the key to... hopefully dismiss Sachin Tendulkar," Lee said on Sunday.

He said, "The spit rock, better known as reverse swing, has been very effective here in South Africa during the World Cup and was a huge factor when I took five wickets against New Zealand in Port Elizabeth last week."

"If we do get a chance to play him again this tournament -- which would be sensational given that it will mean we have made the final -- we would all sit down, talk it through and map out another plan to counter him and the rest of their top order."

Lee has been in great form in the competition, rocking New Zealand with a five-wicket haul at Port Elizabeth the other day and following it up with a hat-trick against Kenya in his second over at Kingsmead, Durban, on Saturday.

The speedster said, "Shane has had a lot of success tailing the ball into the right-handers in plenty of tournaments, including the last World Cup. I'm hoping to continue that.

"When we played India earlier in the tournament, Jason Gillespie was able to trap him early leg before wicket with a fantastic slower ball. We won that game by nine wickets."

Lee has so far picked 18 wickets in the competition and only two scalps shy of Sri Lankan Chaminda Vaas.

"I grew up watching guys like Wasim Akram and Waqar Younis bowl reverse swing, and I remember wondering how they were able to get so much movement out of a ball that was 40-plus.

"Then, when Shane perfected it during his club, state and international career, he taught me the basics and I started working on it while playing grade cricket," Lee said.