Topic - The Qatar Open

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FILE- In this Jan. 28, 2020, file photo, Switzerland's Roger Federer waves after defeating Tennys Sandgren, of the United States, in their quarterfinal match at the Australian Open tennis championship in Melbourne, Australia. Federer is back on tour after more than a year away. (AP Photo/Lee Jin-man, File)

Analysis: Federer back on tour in Qatar, ‘not 100% yet’

By HOWARD FENDRICH - Associated Press

Muguruza beats Begu in Dubai round 1, Keys through

Associated Press

Serena Williams withdraws from 2 events

By The Associated Press - Associated Press

Stomach bug knocks Nadal from Australian Open

By JOSEPH WILSON - Associated Press

**FILE** Rafael Nadal returns a shot to Thomaz Bellucci during a first-round men's singles match at the All England Lawn Tennis Championships at Wimbledon on June 26, 2012. (Associated Press)

Stomach bug knocks Nadal from Australian Open

By Joseph Wilson - Associated Press

Federer pulls out of Qatar Open with back injury

By MICHAEL CASEY - Associated Press