Melbourne: World No. 1 Rafael Nadal insisted on Tuesday that matching or beating Roger Federer's record 20 Grand Slam titles is not important and he was "super happy" with his tennis career regardless.

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The Spaniard launched his campaign to equal the Swiss great's mark by dropping just five games in a 6-2, 6-3, 6-0 annihilation of Bolivian Hugo Dellien in the Australian Open first round.