Dimitrov lost 6-3, 6-2, 7-5 to Stan Wawrinka in the first round of the US Open on Monday.

Dimitrov lost 2-6, 6-3, 6-4 to Novak Djokovic in the third round of Cincinnati on Friday.

Dimitrov was knocked out in the quarterfinals of the Rogers Cup on Friday with a 6-2, 6-2 loss to Kevin Anderson.

Dimitrov lost 1-6, 7-6 (3), 7-6 (5), 6-4 to Stan Wawrinka in the first round of Wimbledon on Monday.