Serena Williams overcame a spirited Nina Stojanovic 6-3 6-0 on a sun-drenched Rod Laver Arena to reach the third round of the Australian Open for the 19th time on Wednesday.
The American needed to find her best game at times in the first set against a Serbian 15 years her junior who was playing in her fourth Grand Slam.
Williams has won seven major titles at Melbourne Park alone, of course, and ramped up her serve to see off the danger before putting the pressure back on her opponent with some booming service returns.
"She pushed me really hard and played well throughout the match," the 39-year-old said.
"I wasn't thinking so much in the second set."
The second set was one-way traffic and Williams fired down her sixth ace of the contest to seal a date with Anastasia Potapova, taking another step on the path she hopes will end with a record-equalling 24th Grand Slam title.
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