INDIAN WELLS, CA - MARCH 15: Roger Federer of Switzerland plays a backhand during his straight sets victory against Rafael Nadal of Spain in their fourth round match during day ten of the BNP Paribas Open at Indian Wells Tennis Garden on March 15, 2017 in Indian Wells, California. (Photo by Clive Brunskill/Getty Images)

INDIAN WELLS, CA - MARCH 15:  Roger Federer of Switzerland plays a backhand during his straight sets victory against Rafael Nadal of Spain in their fourth round match during day ten of the BNP Paribas Open at Indian Wells Tennis Garden on March 15, 2017 in Indian Wells, California.  (Photo by Clive Brunskill/Getty Images)