Serena Williams wins Wimbledon, her third major title in 2015

Nick McCarvel | Special for USA TODAY Sports

WIMBLEDON, England – Twelve years after doing it the first time around, Serena Williams has made history again by winning four consecutive Grand Slam titles – better known as the "Serena Slam."

It's another mark in the history books for the player who many already consider the greatest woman to have ever played the game.

Williams, 33, overcame a staid opponent in Garbiñe Muguruza, a 21-year-old from Spain, Saturday in the Wimbledon women's final, winning 6-4, 6-4.

It's a remarkable feat for Williams, the world No. 1, marking her 21st Grand Slam title and sixth at Wimbledon. She sits just one major trophy behind Steffi Graf's Open era record of 22.

Williams, winner at the U.S.Open last year, now holds all four Grand Slam titles to her name, having emerged victorious at the Australian and French Opens to start 2015.

"The moment is still setting in a little bit," Williams said. "I'm just really excited about it because I didn't want to talk about the Serena Slam. I honestly wouldn't have thought last year after winning the U.S. Open I would win the Serena Slam at all."

In September at the U.S. Open she'll seek to become the first tennis player – male or female – to win all four majors in one year since Graf did so, back in 1988.



"The Serena Slam… stands out to me the most," Williams said. "I mean, I've been trying to win four in a row for 12 years,