Was the first week of the new tennis season eventful? You could say that.
Novak Djokovic and Rafael Nadal lost rather unexpectedly—especially Rafa—while Serena Williams needed a beverage wake-up call on court in Perth. There was no such drama for, who else, Roger Federer.
A few days ahead of the Australian Open, we bring you the first installment of our monthly power rankings, a.k.a. the TENNIS.com Top 25. Novak, for now, leads the way.