Australia were 231 for 8 in their first innings at close of play on the opening day of the fourth and final Cricket Test against India in Delhi today. At stumps, Peter Siddle on 47 and James Pattinson on 11 were at the crease. For India, Ravichandran Ashwin has so far claimed four wickets. Ravindra Jadeja and Ishant Sharma took two wickets each. Earlier, the visitors won the toss and elected to bat. Michael Clarke, who was ruled out due to injury, was replaced by Shane Watson as Captain.For India, Ajinkya Rahane made hisTest debut. The hots have already clinched the series 3-Nil, by winning the first three Tests in the four-match series.