Azarenka has won the Australian Open twice, in 2012 and 2013, but is unseeded for the 2015 event.
Last year was one to forget for Azarenka – injuries to her left foot, then right knee and right foot restricted her to just 24 matches.
Her WTA ranking dropped to 41 and at Grand Slam events the top 32 players are seeded which has now given tennis fans this rather unexpected ‘huge’ second round match.
Wozniacki, whose career was on the down before breaking off her engagement to world number one golfer Rory McIlroy in 2014, then had a good 2014 in terms of tennis reaching the US Open final and winning a WTA event.
The former world number one is currently ranked eighth in the world, having climbed up the rankings after being as low as number 18 early in 2014, which was her lowest ranking since 2010.
Azarenka and Wozniacki have played each other eight times with the Dane winning five of those matches but Azarenka won their last match in straight sets at the Cincinnati Masters quarter-finals in 2013.
Two of Wozniacki’s wins have come when Azarenka was forced to retire due to injury.
The one thing that makes this such and anticipated match by fans is that Azarenka loves playing at Melbourne having won her only two Grand Slams there. Wozniacki has only got as far as the semi-finals in Melbourne, in 2011 losing to Li Na.
Most serious tennis fans would pick the Dane to win due to her seeding, plus she is playing a lot of tennis and has been in decent form for some time and generally looks fit and sharp, physically and mentally.
The Belarusian plays particularly well at the event and is popular with the crowd but the question is, what is she feeling like mentally? You can be physically very fit but that does not mean you are mentally competitive and match fit for such a big encounter, as your competitive mental strength gets stronger the more competitive tennis you play.
Azarenka played very little tennis in 2014 and that could be the reason if she loses on Thursday.
Whatever the outcome hopefully we can expect a cracker of a match as either player, when 100% fit, is quite capable of winning the 2015 Australian Open.