New Delhi:Steve Waugh predicts a tough series when the Kangaroos visit India next month for a four-match test series. Waugh, on a promotional tour to India, also said that on current form India and Australia were the two best Test teams at the moment. "I think they are the two best sides in the world, England would probably say that they are now up there, but India have earned the right to challenge Australia," he said. The Indians pulled off a sensational 2-1 test series win over Australia when Waugh's men last travelled to India for a test series in 2001. 'Last frontier' And this October, the Aussies will be back for another endeavour to conquer what they call the last frontier. "Last two series have been outstandingly good. India have won here and drew in Australia. So the upcoming series would be a battle of heavyweights," he adds. The former Australian also said he expected the Indian cricket team, now in a slump, to be all fired up and ready to take on the world champions in the October-November Test series. "You can't read too much of the one day form leading into the test match series, that's what is coming up. It's going to be a tough series. It's going to be close and as I have said that whoever wins, that will be the side that fields the best," he says. Judging by India's last tour down under and with the Aussies looking for their first test series win since 1969-70, the four match test series will be the battle to watch out for.