Serena Wins Meeting of Williams Sisters in Australian Open Finals

Serena Williams now has the most grand slams in the Open Era.
1:37 | 01/29/17

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Transcript for Serena Wins Meeting of Williams Sisters in Australian Open Finals
We want to turn now to the sister act playing out down under. Serena Williams dominating that family court rivalry. So now that she's got a historic 23 grand slams under her belt, what's next? ABC's Paula Faris tells us. Reporter: Tonight, Serena cementing her place in history. After dominating her big sister Venus in the Australian open finals, falling to the floor ground overcome with emotion. The two embracing at center court, the win giving Serena the most grand slams in the modern open era. 23-time grand slam champion, Serena Williams. Reporter: The Williams sisters considered tennis royalty, having both battled and supported each other since they were teenagers, facing off 28 times. The highlight of all of this is to be in that moment. I really enjoy seeing the name "Williams" on the trophy, so this is a beautiful thing. Reporter: Venus carving out her own piece of history today, at age 36, becoming the oldest finalist ever at the Australian open. I just felt like, it didn't matter who won or who lost I felt like we both were able to win today by just making it this far. Reporter: And tonight, Serena regaining her number one ranking, and while many now consider her to be the greatest tennis player ever -- she says she's looking forward to a little time off to begin planning for a different kind of match. Her wedding with Reddit co-founder, Alexis Ohanian, her biggest fan and fiance. Paula Faris, ABC news. A well-deserved congratulations all around.

This transcript has been automatically generated and may not be 100% accurate.

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