Rohit Sharma's omission from the India squads for the three formats on their tour of Australia next month has raised questions over his participation in the remainder of this IPL season.

While the BCCI's media release with the squad details merely said its medical team would "continue to monitor [Sharma's] progress", there was no word about any possible injury. Neither has there been any official statement from Mumbai Indians - of which he is captain - on whether he will play the rest of this season.

He has not played for Mumbai since the defeat against Kings XI Punjab on October 18. Minutes before the toss in their last match, against Chennai Super Kings on October 23, Mumbai issued a statement saying Sharma had " suffered left leg hamstring strain" against Kings XI.

Around the time the BCCI announced the squads, though, Sharma was attending Mumbai's training in Abu Dhabi, where he batted for the first time since the injury.

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His omission from the squads today doesn't, however, necessarily mean he will play no part on the tour. In fact, though neither Mumbai nor the BCCI have revealed the severity of Sharma's injury, it is understood the player has been cautioned by the board's medical team to not take any chances because it would impact his availability for the Australian tour.

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The BCCI medical team's caution is understandable because this is the second time Sharma has injured his left leg. In February Sharma was forced to return home from New Zealand after tearing his left calf muscle during the T20 leg of that series.

Sharma had sustained the injury in the match against Kings XI, which had gone into a second Super Over. Sharma had batted in the first Super Over, but was pinned down by Mohammed Shami, who bowled five yorkers to concede two runs and help Kings XI defend the five-run target. It was while completing a tight single off the penultimate delivery of that over that Sharma is understood to have injured his hamstring. He did not return for the second Super Over, with Kieron Pollard taking charge then, and since, then as the Mumbai captain.

That same Mumbai statement said Sharma was making "good progress" but he watched Mumbai's most recent match, against Rajasthan Royals on Sunday, from the sidelines.

In August, Sharma admitted that it would be challenging for him to return to cricket in the IPL after a six-month break owing to the Covid-19 pandemic. And it has not been easy for him: he has scored 260 runs while opening in nine matches with two fifties and a strike rate of 129.

Mumbai's next three matches are on October 28 (against Royal Challengers Bangalore), October 31 (Delhi Capitals) and November 3 (Sunrisers Hyderabad).

Mumbai, the defending champions, currently lead the points table and are favourites to make the playoffs which will be played between November 5-10.