Serena Williams is Sports Illustrated's 2015 Sportsperson of the Year. She not only dominated her sport in 2015 like few athletes ever have, but she also continued to grow off the court, searching, speaking out and, most important, healing an old wound
Roger Federer failed to convert on key points in the 2015 U.S. Open final, falling yet again to World No. 1 Novak Djokovic. While Federer still searches for his first Slam title since 2012, Djokovic is on course for a historic career.