Will Roger Federer Re-Join the Big 4 in 2014?

Colloquially, Roger Federer is still a part of the illustrious Big Four in men's tennis. Numerically, however, he isn't. Going into the 2014 season, Federer is in a spot that he hasn't been in since 2002—No. 6. Eleven years, 17 Grand Slams and 302 weeks at No. 1 later, Federer is once again on the outside of the Top Five looking in. All eyes will be on the 32-year-old during the 2014 tennis season to see if this will be a year of redemption or continued regression. One thing is for sure—it'...