Belinda Bencic extended her undefeated season-opening streak when she beat Elise Mertens 6-3, 4-6, 7-6 (0) Saturday to put Switzerland ahead 1-0 in the United Cup semifinals over Belgium. Tournament organizers started play 30 minutes earlier than scheduled with searing temperatures of up to 43 Celsius (109 Fahrenheit) in the forecast for Sydney. Stan Wawrinka, who will retire at the end of this season, played Zizou Bergs in men's singles in an attempt to advance Switzerland to Sunday's final at Ken Rosewall Arena against either the defending champion United States or Poland.
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https://sports.yahoo.com/articles/belinda-bencic-puts-switzerland-1-040453629.html
