Wimbledon (AP): Even with three of the last four major titles in tow, Serena Williams is still a little bit upset about the one that got away.

The younger Williams sister beat Venus for her third Wimbledon title on Saturday, making her the reigning champion at the U.S. Open, the Australian Open and, of course, at the All England Club.

However, a second French Open title and a very realistic chance at a true Grand Slam - winning all four majors in the same year - eluded her.

"I'm really disappointed because I think this is the year I could have done it. And I didn't," Serena said Sunday, a day after beating Venus 7-6 (3), 6-2 on the Centre Court grass.

"I honestly had the biggest chance to win all four than I've ever had in my career."

Over the last five Grand Slam tournaments, Serena has an astonishing 31-2 record. Her only setbacks were a straight-set loss to Venus in last year's Wimbledon final, and a three-set loss to eventual champion Svetlana Kuznetsova in the French Open quarterfinals.

"I really just basically screwed up. But I can't live in the past, even though I am always still thinking about my quarterfinal match that I could have won," Serena said. "But what can I do?"