Tendulkar cautioned India not to underestimate Australia, who are rebuilding after a series of high-profile retirements, at a news conference after the opening day of the preparatory camp at the National Cricket Academy .
Australia won a four-test series 2-1 four years ago to record their first series victory on Indian soil in 35 years, but only skipper Ricky Ponting, Matthew Hayden, Michael Clarke and Simon Katich from the current squad have test experience in India.
"They still have players who have played a lot of first-class cricket back home," Tendulkar said. "If they haven't played international cricket, it doesn't mean that they cannot challenge us.
"They have played a lot of cricket, and we will like to respect that fact. And we are on our toes."
Australia decided to go ahead with the tour after a security review following blasts in the Indian capital on Sept. 13 that killed at least 20 people and injured more than 90. On Saturday, a bomb blast in a New Delhi market place killed two people and wounded 22. "I can't comment on what the Australians feel, but can definitely say that we are in our homeland and I don't think anyone will look to harm us," Tendulkar said