ROME, ITALY - MAY 18: Rafael Nadal of Spain during the men's third round match against Jack Sock of USA on Day Five of the Internazionali BNL d'Italia 2017 at the Foro Italico on May 18, 2017 in Rome, Italy. (Photo by Michael Steele/Getty Images)
ROME, ITALY - MAY 18: Rafael Nadal of Spain during the men's third round match against Jack Sock of USA on Day Five of the Internazionali BNL d'Italia 2017 at the Foro Italico on May 18, 2017 in Rome, Italy. (Photo by Michael Steele/Getty Images)