Rafael Nadal, Novak Djokovic Ready For 2015 Australian Open Challenge?

Before this week, the last time neither Novak Djokovic nor Rafael Nadal reached the semifinals of a tournament in which they both featured was the Madrid Masters more than two-and-a-half years ago. It caused a few ripples then when the two dominant players in men's tennis of recent years both saw their preparations for the 2015 Australian Open disrupted by early exits at the Qatar Open.