Australian Open 2015: 5 Things To Know Before The First Tennis Grand Slam Of The Year

The new tennis season is just a couple of weeks old, but the first Grand Slam of 2015 is almost upon us. Its early position in the calendar has meant that the Australian Open has tended to be the most unpredictable of tennis's four major events. Certainly that was the case last year. And there are plenty of factors to add intrigue to this year's event in Melbourne. Here are five major storylines ahead of the tournament which begins next Monday.