The Serb won his 15th grand slam title in Melbourne
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The Japanese star will claim the world number one spot on Monday.
The US Open Champion has her mental and physical game working as she heads to Australian Open final
The Czech will advance to the Australian Open semifinals
The Greek star will face Rafael Nadal next
Serena defeated world no. 1 Simona Halep to advance in Melbourne
Both former champions looked strong in their first round matches.
Both two-seeds were impressive in their openers at Melbourne
The world no. 9 appears confident heading to the Australian Open
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