In a set back for India, Indian cricket team, opener Gautam Gambhir and pacer Ishant Sharma were today ruled out of the second Test against Australia due to knee injuries while VVS Laxman became doubtful on account of back spasms.The BCCI named batsman Abhinav Mukund and pacer Jaydev Unadkat as replacements for Gambhir and Ishant.Zaheer Khan has been adjudged the Man of the Match against Australia in the Mohali test.