India defeated Australia by 11 runs in the first T20I in Canberra on Friday to take their unbeaten run in T20I cricket to 10 matches. Leg-spinner Yuzvendra Chahal, who was not named in India's playing XI, replaced Ravindra Jadeja as concussion substitute and registered bowling figures of 4-0-25-3, while debutant T Natarajan also took 3 wickets.