By Nick Georgandis

Two years ago, a return to the No. 1 spot in the world would have seemed about as likely for Serena Williams as a it would have for K-Pop to rule the American airwaves with that song that shall not be named. (We're just as over it as you are.)

Yes, just two years ago, Serena was No. 26 in the world and missed the first six months of the season due to one lingering injury or another. Fast-forward and here she two Grand Slams richer, No. 3 in the world, with a chance at unique history -- becoming the oldest player to ever be ranked No. 1.

Even though Serena played and played decent to start 2012, she still has the opportunity to make up a ton of points in the first few months of 2013. She lost in the fourth round of the Australian Open a year ago, and was out in the first round at Roland Garros.

If she's able to leapfrog Maria Sharapova and and re-take the top position, she'll break Chris Evert's record for oldest No. 1 -- set in 1985 when Evert was 30 years, 6 months of age.

Williams turned 31 last fall. She is currently 1,195 points behind Azarenka, who is the defending Australian Open champion; and 645 points behind Sharapova, who has already withdrawn from one tournament due to injury, and was the 2012 Australian Open runner-up.

Williams also said she believes she can win all four majors this year, a feat not accomplished since 's legendary Golden Slam 1988 season -- in which the German won all four majors and the Olympic gold medal.

The only other player to win all four majors in the same season in the Open Era was Margaret Court in 1970. If Williams wins the Australian Open, she'll become the first player to win three staight Slams since she won four in a row starting with the 2002 French Open and ending with the 2003 Australian Open.

Evert claimed the No. 1 ranking for the final time in 1985 when she defeated Martina Navratilova at the French Open final. It was the sixth of her record seven wins at Roland Garros.