For the third test, include yuvraj singh as the opener and see how it goes...and same for the australia tour. they are scared of him...but as a opener you never know. Nothing wrong in trying him instead of taking the not that great karthik. You have an option for bowling a spinner also....so for the third game, just take karthik out and put yuvraj in....And for the aus tour, take harbajan out and bring in sreeshanth or irfan pathan. Sreeshanth would be a better choice...as we need someone that kind in the team to boost our old guys.....