Boulter upsets top seed Rybakina, Vekic wins Czech doubleheader at Queen's

British wild card Katie Boulter upset top seed Elena Rybakina on Friday at the HSBC Championships at Queen's Club, securing her second top-five win on the WTA Tour. Lucky loser Donna Vekic also won her doubleheader on the same day. Both Boulter and Vekic advanced to the semifinals scheduled for Saturday.