Simona Halep's heartbreaking exit walk after shock defeat at the Australian Open

And started 2017 with an error-prone loss in Auckland, New Zealand.

Knowing she had a scheduled afternoon assignment with sister Serena for their opening doubles match on Court 2, Williams moved forward frequently trying to end points quickly.

The Swiss teenager held at love and then faced a match point, when Williams double-faulted again. After losing in the 2016 US Open semifinals, she sat out the remainder of the season for the second year in a row. Forehand unforced errors are springing from both players' racquets.

Other men's seeds advancing included 2014 U.S. Open champion Marin Cilic, 2008 Australian Open finalist Jo-Wilfried Tsonga, No. 19 John Isner, No. 23 Jack Sock, No. 27 Bernard Tomic, No. 29 Viktor Troicki and No. 31 Sam Querrey.

Pliskova allowed only two games to her opponent, and is not allowing the talk of being a title contender to be a distraction.

"I get to travel the world and play in these great areas so it's self motivating". "So I'm ready for the tournament".

The world No 5 was in relentless form as she won 6-2, 6-0 in 62 minutes to set up a second-round clash with Russian qualifier Anna Blinkova, who ended the hopes of Romanian Monica Niculescu.

"I was like, the next opportunity I'm definitely going to take it", he said after his first-round win on Tuesday, flashing a wide grin.

No. 6 Dominika Cibulkova, former No 1-ranked Caroline Wozniacki, No. 14 Elena Vesnina, No. 21 Caroline Garcia, No 28 Alize Cornet, No. 30 Ekaterina Makarova also advanced.

Meanwhile, Milos Raonic loped into the second round with a comfortable 6-3, 6-4, 6-2 victory over Germany's Dustin Brown.

Previous year as the 13th-seeded player, Raonic had his best performance at Melbourne Park, advancing to the semifinals before losing to Andy Murray.

The next generation of young players, all aged between 18 and 20, is starting to emerge and showing enough promise at this year's Australian Open to suggest they may be on the cusp of a breakthrough.

Williams at her best remains the pre-eminent force on the WTA tour.

No. 25 Gilles Simon beat US wild-card entry Michael Mmoh 6-1, 6-3, 6-3.

All-rounder Ashleigh Barty made a stunning return to her home Grand Slam after quitting to play cricket in 2014.

"I've been through the ups of knowing how fun it is when everyone's behind you and talking about you can win Grand Slams, and I've been through the downs of everyone saying that you're literally done with your career", said the 24-year-old Harrison, who beat Nicolas Mahut 6-3, 6-4, 6-2. "In the warmup. I felt fine".

"I will try to not put too much expectation and pressure on myself".

"I struggled for a while to find that groove, that rhythm".

Stan Wawrinka apologised for slamming a ball at Martin Klizan after he survived a tense five-setter to reach the Australian Open second round on Monday.



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