(Reuters) - Roger Federer continued his mastery over Stan Wawrinka, but not before getting a fright en route to a 6-7(2) 7-6(6) 6-2 quarter-final victory at the Cincinnati Masters on Friday.

Aug 17 (Reuters) - World number one Simona Halep pulled double duty at the weather-hit Cincinnati Masters in Ohio on Friday, beating Ashleigh Barty then Lesia Tsurenko to claim a place in the semi-finals.

Novak Djokovic claimed victory twice on Friday to advance to the semifinals of the Western & Southern Open at Mason, Ohio.

(Reuters) - World number one Simona Halep began a busy day by beating Australia's Ashleigh Barty 7-5 6-4 in the Cincinnati Masters third round on Friday.

Serena Williams had the most painful loss of her life on her mind when she suffered the worst loss of her career on July 31.

(Reuters) - Top seed Simona Halep returned to sew up victory over Ajla Tomljanovic on Thursday after their second round match at the Cincinnati Open had been suspended the previous day due to rain, while reigning U.S. Open champion Sloane Stephens was knocked out in the third round by Elise Mertens.

(Reuters) - Juan Martin del Potro quickly dispatched South Korean Chung Hyeon 6-2 6-3 on Thursday in a Cincinnati Open second-round match carried over from the previous day because of inclement weather.

LONDON (Reuters) - Proposals to revamp the Davis Cup into a season-ending 18-team event were backed by national federations at the International Tennis Federation annual general meeting in Orlando, Florida, on Thursday.

LONDON, Aug 16 (Reuters) - Proposals to revamp the Davis Cup into a season-ending 18-team event were backed by national federations at the International Tennis Federation annual general meeting in Orlando, Florida, on Thursday.