World No.1 Elena Rybakina and top seed at the Pan Pacific Open withdrew from her quarterfinal match on Friday. Rybakina said she was unable to. Elena Rybakina withdraws from the Pan Pacific Open with a neck injury a day after securing the year-end World No. 1 Elena Rybakina’s campaign at the Pan Pacific Open ended prematurely on Friday after the Kazakh withdrew from the WTA 500 tournament due to a neck injury.