Swiss teenager beats Serena Williams

Serena Williams suffered only her second loss of 2015 last Saturday evening, as Switzerland teenager Belinda Bencic recorded the biggest win of her career in a 3-6, 7-5, 6-4 upset at the Rogers Cup semifinals.

The stunning result continues a remarkable week for the 18-year-old Bencic, adding the world number one to her impressive list of victories in Toronto that also include knocking off Eugenie Bouchard, Caroline Wozniacki, Sabine Lisicki and Ana Ivanovic.

It seemed things would go as according to plan when the legendary Williams routinely took the opening set in 32 minutes.

The 21-time Grand Slam champion, who is seeking a calendar Grand Slam at the US Open, was solid enough from the baseline and produced quality second serves to leave Bencic looking for any hope just to be competitive.

But at the start of the second set, Serena’s ball toss on serve began floating out of her contact point, with her toss sometimes floating to her right. 

— SBNation