Grigor Dimitrov reaches semi-finals at Queen's as Alexandr Dolgopolov withdraws

Grigor Dimitrov has received a walkover into the semi-finals of the Aegon Championships at Queen's after Alexandr Dolgopolov was forced to retire with an injury.

The eighth seed hurt his right thigh during a first-round doubles match with Ernests Gulbis on Thursday.

The 25-year-old failed to recover in time for his quarter-final match, which has resulted in Dimitrov reaching the final four without a ball being hit.

The fourth seed will meet either Stanislas Wawrinka or Marinko Matosevic in the next round.