No end for on-song Serena

In-form American veteran seals her 308th GS win after toppling Shvedova

Serena Williams, piling up the records as she hurtles toward yet another Grand Slam title tilt at the US Open, can't imagine stopping now.

Back when she was winning the first of her 22 Grand Slam titles to date, at the 1999 US Open, she didn't expect she'd still be playing at the age of 34.