A few months before India begin their ultimate challenge of carrying their successful run across formats overseas in countries like South Africa, England and Australia, former cricketer Sunil Gavaskar has labelled Virat Kohlis team as the one which may become one of Indias greatest ever in ODIs. India on Sunday became the No 1 ODI team with a five wicket victory over Australia, in the third game of their five match series against Australia.Last year, the Indian cricket team had reached the No 1 spot in ICC Test Rankings, and their achievement on Sunday marks the first instance ever that India have occupied the top spot in two formats at one time. In T20Is, however, India are languishing at the fifth spot.