Reigning champion Dimitrov was forced to pull out of his home tournament, which begins next week, due to a shoulder injury.
“I and my team had to take one of the most difficult decisions—to skip this year’s edition of the tournament in Sofia,” Dimitrov said in a statement. “Earlier today I had my last medical consultation. Unfortunately I will not be at 100 percent ready for next week. If I play it would lead to additional risks and complications.”
The tournament announced Wawrinka, Dimitrov’s former doubles partner, has stepped into the field.
