Alex Morgan showed off impressive composure in her penalty finish as USWNT grab a 4-0 lead against Nigeria.
Kvitova edges Muruguza in 22-point tiebreaker
Petra Kvitova erased a pair of match points and converted her fourth to edge Garbiñe Muguruza and advance to the fourth round of the US Open, where she will face American Jessica Pegula.
