STUTTGART, GERMANY - JUNE 12: Rafael Nadal of Spain reacts during his match against Bernard Tomic of Australia on day seven of Mercedes Cup 2015 on June 12, 2015 in Stuttgart, Germany. (Photo by Daniel Kopatsch/Bongarts/Getty Images)
STUTTGART, GERMANY - JUNE 12: Rafael Nadal of Spain reacts during his match against Bernard Tomic of Australia on day seven of Mercedes Cup 2015 on June 12, 2015 in Stuttgart, Germany. (Photo by Daniel Kopatsch/Bongarts/Getty Images)