Roger Federer out of Australian Open after knee surgery

Jan. 30, 2020 file photo, Switzerland's Roger Federer serves to Serbia's Novak Djokovic during their semifinal match at the Australian Open tennis championship in Melbourne, Australia. (AP )

Twenty-time Grand Slam champion Roger Federer will miss the Australian Open for the first time in his career as he continues his recovery from two rounds of knee surgery, organisers said Monday.

The 39-year-old Swiss has been out of action since February but recently resumed training and was on the entry list for year's opening Grand Slam, which will make a delayed start on February 8.