Grigor Dimitrov Withdraws from Brisbane Semifinal Due to Groin Injury

The defending champion's retirement sends Jiri Lehecka to his fourth ATP final, just days before the Australian Open begins.

Grigor Dimitrov, ranked world No. 10, retired from the Brisbane International semifinal after receiving treatment for a groin and hip injury.
Dimitrov was trailing 6-4, 4-4 against unseeded Czech player Jiri Lehecka when he withdrew from the match.
Lehecka, 23, advances to his fourth ATP final and will aim to add the Brisbane title to his Adelaide International win last year.
Dimitrov, a former world No. 3, has one week to recover before the Australian Open starts on January 12 in Melbourne.
Lehecka will face either Reilly Opelka or Giovanni Mpetshi Perricard in the final, both known for their powerful serves.