Nadal downed James Duckworth in straight sets on Rod Laver Arena, 6-4 6-3 7-5, showing no signs of the injuries that ruined his lead-up to the season’s first grand slam. Duckworth did produce some late fight in the third set, breaking when down 3-5.
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Top-ranked Aussie man Alex de Minaur also went through in straight sets, defeating Portugal’s Pedro Sousa 6-4 7-5 6-4 less than 48 hours after his Sydney International title win.
Australian Open 2019 Live Stream All Match
Jordan Thompson also progressed to the second round, defeating Feliciano Lopez in straight sets.
Australian Open Live Stream 2019 All Match
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Meanwhile a 2018 Australian Open semi-finalist is in major danger of a first round exit, with British 13th seed Kyle Edmund down two sets to veteran Tomas Berdych, 3-6 0-6.
Five-time Australian Open finalist Andy Murray has played his last match at Melbourne Park after a heartbreaking 6-4 6-4 6-7 (7-5) 6-7 (7-4) 6-2 first-round loss to Roberto Bautista Agut on Monday.
Battling a chronic hip injury that has him on the verge of retirement, Murray put up an almighty fight against the Spanish 22nd seed and nearly pulled off an epic comeback in the four-hour-and-nine-minute contest.
The 31-year-old Scot, who said he will assess his future in the sport after the tournament, had momentum heading into the deciding set but Bautista Agut broke twice before serving out the match.
Reigning Australian Open champion Caroline Wozniacki has marked her return to Rod Laver Arena with a win, defeating Belgian Alison van Uytvanck in straight sets.
The Danish world No.3 won 6-3 6-4 on Monday night, her first match on Melbourne Park's centre court since she lifted the Daphne Akhurst Memorial Cup last January.
While Wozniacki was a picture of concentration for much of her clash, the emotion flooded in after her first-round victory.
"Last year I had some incredible memories from here ... it's such a special feeling. I love playing back here," she said.
"I'm going to start crying and I never cry."
Wozniacki needed an hour and 33 minutes to get past the Belgian world No.52.
Her serve and overall consistency was the difference.
Wozniacki was never broken, facing just two break points, while recording just 16 unforced errors against a "very tricky" opponent.
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