ROME, ITALY - MAY 09: Grigor Dimitrov of Bulgaria in action during his match against Alexander Zverev of Germany during day two of The Internazionali BNL d'Italia 2016 on May 09, 2016 in Rome, Italy. (Photo by Matthew Lewis/Getty Images)
ROME, ITALY - MAY 09: Grigor Dimitrov of Bulgaria in action during his match against Alexander Zverev of Germany during day two of The Internazionali BNL d'Italia 2016 on May 09, 2016 in Rome, Italy. (Photo by Matthew Lewis/Getty Images)