By Chris Oddo

(January 14, 2013) -- It's difficult to think of a time when Serena Williams and older sis Venus Williams were just "breaking through" on the women's tour. In Melbourne, their big splash came with Serena's first Australian Open title, in 2003. The sisters met in the final -- their fifth meeting at a major in a little over two years -- and it was the first Australian Open final for either Serena or Venus.

Serena won the match 7-6(4), 3-6, 6-4 -- her fourth consecutive Grand Slam title -- thus leading to the coining of the phrase the "Serena Slam." For Venus, the  defeat would mark her only Australian Open final to date; Serena's breakthrough success would be just the beginning of an unprecedented run in Melbourne that would leave her as the leader for women's Australian Open titles in the Open Era.

In 2013: Serena will go in search of a sixth title in 2013, while Venus, who won her first round match with ease on Monday, is still in the hunt for her first.