"You never know. From 2006-07, there has been this talk of Tendulkar's retirement going on. But he has been playing the same way," Gavaskar said.
"Only he (Tendulkar) would know this," he said when asked if Tendulkar has played his last Test on Indian soil at the Feroze Shah Kotla here, considering that the team would mainly play outside the country in the next 12 months.
Gavaskar said India captain Mahendra Singh Dhoni would not be unhappy for losing the toss in all the four matches of the Test series against Australia.
He also felt that India were in a good position on the opening day of the final Test here.
"230-odd runs for eight wickets on first day would not be intimidating on India. Because, India have done well in batting in the series. Every innings there has been impact innings, be that of Dhoni (in first match), Pujara (in second) and Shikhar Dhawan in third.