Injury keeps Clarke

          Clarke has struggled with back trouble for many years and exacerbated the problem during the warm-up on day four in Mohali and was clearly hampered by his injury while batting at No.6 in Australia's second innings. Brad Haddin led Australia in the field during Clarke's periods off the ground but with the vice-captain Watson having rejoined the squad - he batted in the nets in Delhi on Wednesday - he is the most likely man to take charge if Clarke is ruled out.But over the past few days Cricket Australia has been at pains to say that Watson is now fully on-board with the plans of the team management and he has committed to Test cricket for the long term. The opener Ed Cowan, who holds no official leadership position but is a well-respected older member of the group, said the squad had no problems welcoming Watson back after the events of the past week.However, that would create an interesting dynamic given that Watson was one of the four men who failed to complete Arthur's so-called homework task and was left out of the Mohali Test. Watson flew out of Chandigarh the same day for the birth of his first child and when he left, he expressed his disappointment at what he felt was a very harsh punishment and said he would use his time at home to consider his cricket future.