Sydney: Opener Shane Watson scored a superb unbeaten century (127) to guide Australia to a strong total of 197/5 in the third and final T20 International against India here on Sunday. Watson hit the Indian bowlers to all corners of the Sydney Cricket Ground in his 71-ball knock, with 10 boundaries and six sixes. Middle-order batsman Travis Head was the next most successful scorer with 26 runs off 19 balls. Left-arm pacer Asish Nehra (1/32) was the most impressive bowler for India. India have already clinched the series with an unassailable 2-0 lead.