World No.1 Elena Rybakina of Kazakhstan advanced to the Ningbo Open semifinals with a three-set win Friday against Poland's Katarzyna Kawa in China.In a match with a combined nine service breaks, the top-seeded Rybakina completed her 6-1, 3-6, 6-1 victory in 1 hour and 45 minutes thanks to a 29-14 advantage in winners.
