Major upset at US Open: Serena Williams loses semi-final and No. 1 ranking

New York: Serena Williams crashed out of the US Open, her semi-final defeat to Karolina Pliskova costing her a shot at a 23rd Grand Slam title and a record 187th straight week at number one. Williams double faulted on match point in a second-set tie-break to give Pliskova the match. With Pliskova's 6-2 7-6 straight sets win, Williams' 186-week reign as world No 1 (stretching back to February 18, 2013) is now over.

Williams fell behind by a quick 3-0 in the breaker but rallied back to three-all with two miniholds and a double fault by Pliskova. The match came to an end as the American lost with a double fault to fall in the semis of the US Open for the second straight year. IANS