German seventh seed Angelique Kerber has caused a huge upset defeating world No.1 Serena Williams in ... A win over Kerber would see Williams hold up the trophy at Melbourne Park for the seventh ...

NEW YORK (AP) — U.S. Open champion Angelique Kerber officially became the oldest woman to debut at No. 1 in the WTA rankings, ending Serena Williams' record-tying run of 186 consecutive weeks in ...