Serena Williams celebrates with the winner's trophy, the Venus Rosewater...

Serena Williams celebrates with the winner's trophy, the Venus Rosewater Dish, after her women's singles final victory over Spain's Garbine Muguruza at the 2015 Wimbledon Championships at The All England Tennis Club in Wimbledon, on July 11, 2015. Credit: Getty Images / Glyn Kirk

She had won Wimbledon, but Serena Williams was talking about New York and the U.S. Open. About the possibility of making history. About the possibility of becoming the first player in more than a quarter-century to win the tennis Grand Slam.

On a glorious day in suburban London, Williams beat Garbine Muguruza of Spain, 6-4, 6-4, giving her a sixth Wimbledon women's singles title and so much more. She now has a second "Serena Slam," winning all four of the majors in succession since the U.S. Open last year. And she has a shot at the true Grand Slam, all four in a calendar year.

That hasn't been done since Steffi Graf did it in 1988. Graf, the wife of tennis great Andre Agassi, retired with 22 majors overall, one more than Williams. Williams had refused to discuss the future until her victory Saturday.

"The moment is just setting in," said Williams, who at 33 -- six weeks from her 34th birthday -- became the oldest Wimbledon champion ever, man or woman. "It's a great feeling. I'm just really excited about it because I didn't want to talk about the Serena Slam. I honestly wouldn't have thought about it last year after winning the U.S. Open that I would win the Serena Slam."

Asked about the attention and hype that will explode when she arrives at Flushing Meadows the end of August, Williams said: "You know what? I feel I'll be OK. I feel like if I can do the Serena Slam, I will be OK heading into the Grand Slam. Like I always say, there's 127 other people [the size of the draw] that don't want to see me win. Nothing personal. They just want to win. I had a really tough draw. This gives me confidence that if I had this draw, I can do it again."

For a brief while, when she served three double faults and had her serve broken in the very first game by Muguruza, it didn't seem as if Williams was going to do it. Then, down 4-2 in the first set, she won the next four games.

Said Muguruza, who beat Williams a year ago in the French Open, "With Serena, you lose two points, you lose the match."

When Muguruza was given the second-place silverware, the Centre Court crowd gave her a long ovation and she started wiping away tears. "I felt special," she explained.

Williams has proved herself to be very special. The last major match she lost was to Alize Cornet at the 2014 Wimbledon. Since then, she is 28-0 in the U.S., Australian, French and now the 2015 Wimbledon.

"I feel I'm more fit and can do more than 10, 12 years ago," said Williams, who won a "Serena Slam" in 2002-03. She missed the 2002 Australian Open because of an injury, then won the French, Wimbledon and U.S. Open that season followed by the 2003 Australian.

Williams' path this Wimbledon included sister Venus, who is 35 and a former Wimbledon champion, and Victoria Azarenka, a former No. 1 who has won two Australian Opens. She lost a set to Heather Watson and to Azarenka but rallied -- or more accurately steadied.

"The toughest thing to accomplish is to stay in the moment," Williams said. "It's easy to go out and say I want to win, then try to win. But you have to win seven matches. You have to win each match. You have to win each set. You have to win each point."

Asked how she did it, Williams said, "You just do it."

Williams seems to believe Muguruza, ranked 20th, soon will be doing it. "She came out there to win," Williams said. "She wasn't out there just to play a final. I think that says a lot about her and her future."

As far as her own future, it could get very interesting. Asked to put into perspective the chase for the Grand Slam, she said: "It's huge, really huge. Of course, I haven't done it. I'm going to try my best, but I don't have the Grand Slam in my hands."

She does, however, have it on her racket.

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