Serena vs. Venus: How history is made

While the men's draw took some top seed upsets to eventually pit Roger Federer against Rafael Nadal once again, the last two women standing wasn't as shocking to see. Serena Williams has been in a final of a major at least once every year since 2006. Getting to this round wasn't as easy for her older sister Venus, but the 36-year-old has been no slacker either, reaching the semifinals of Wimbledon just last year.

With her most recent win over Venus, Serena Williams established herself as the all-time Grand Slam winner with 23.

Here’s a look at all of their Grand Slam final encounters, starting in Saturday's Down Under finale:

The world waited eight years to see another sister final at a major and weren't disappointed with Serena capturing a 6-4, 6-4 victory to seal her place in history. She also returned to No. 1.

"Venus'] an amazing person. There's no way I would be at 23 without her, there's no way I'd be at one without her. She's my inspiration..."**[Serena said."She's the only reason I'm standing her today and the only reason the Williams sisters exist."**

This was their last final major showdown until Saturday. At Wimbledon, after losing in the 2008 final, Serena had to wait a year to take out her her big sister, 7-6 (3), 6-2 to win her third Venus Rosewater Dish.

"It’s named the Venus, and she always wins it, and it’s just like, 'wow,'" Serena said."It hasn’t settled in that I won yet."

Venus' plentiful grass-court experience came out on top in this particular Wimbledon final, winning 7-5, 6-4.

"She played so awesome so it was really a task," Venus said, celebrating her seventh Grand Slam title (and fifth Wimbledon).

At Wimbledon one more, despite dropping the first set, it was little sister Serena’s title for the taking for the second year in a row, 4-6, 6-4, 6-2.

"The way I played, and the way Venus had been playing, she would have been the Wimbledon champion this year," the younger Williams said.

In their only Australian Open final meeting until this weekend, Serena outlasted her big sister, 7-6 (4), 3-6, 6-4, to complete her first "Serena Slam" (four majors in a row).

"I think going into a tiebreak like that, you have to really, really be really tough. I wouldn't say I'm more mentally tough than Venus,"Serena said. "Most of my ideas and everything I actually get from her. Most of my fight and courage I've gotten from Venus."

This year was all about Serena, all the way, beating Venus 6-4, 6-3 in the US Open final for her second Slam of the year.

"If anything I prefer to play Venus because that means that we have reached our maximum potential and that we'll both go home winners,"Serena said. "So for me—I always want to see Venus do well. I never want to see Venus lose."

Serena wouldn’t be denied her first Wimbledon title, even against a family member, winning, 7-6 (4), 6-3.

"At the beginning of the year, I told myself I don't care what else happens this year, I want to win Wimbledon," Serena said.

Serena secured her first Roland Garros crown by topping Venus, 7-5, 6-3 despite some tentative play from both women.

"I was thinking when I was out there, 'Gosh, my Dad would be very upset at the way we're both playing right now,' '' Serena said."I was not mentally focused enough.''

In their first-ever Grand Slam final contest, Venus ousted little sister Serena, 6-2, 6-4 for her fourth Grand Slam title at the US Open.

"Because this is our first Grand Slam final together, and really that's the way we'd like it to be,"Venus said on the significance of the final. "Because then both of us win in a way. And, also, I just hate to see Serena lose anyway—even against me."

It took eight long years from the 2009 Wimbledon title match until Saturday for another all Williams final at the Australian Open. With Williams fighting for the No. 1 spot and her record-breaking 23rd Grand Slam, a lot was on the line.