The Indian cricket team got an injury scare after openers Virender Sehwag and Gautam Gambhir were rendered doubtful starters for tomorrow's fourth cricket one-dayer against Australia at Mohali.The BCCI said a final decision on whether they play tomorrow will be taken on the morning of the game. Tamil Nadu wicket-keeper batsman Dinesh Karthik has been brought in as cover for the duo. Sehwag had been hit on his foot by a Peter Siddle yorker in yesterday's match which had him in pain, needing the physio's attention.Gambhir, on the other hand, was struck on the neck by aRicky Ponting pull. The opener didn't field for the rest ofAustralia's innings after that. India won last night's match by six wickets to take a 2-1 lead in the series.