Petra Kvitová reaches quarterfinals in Australian Open

The Czech Republic's Petra Kvitová downed Italy's 22nd seed Flavia Pennetta 3-6, 6-3, 6-3 in the fourth round of the Australian Open on Monday. The 28th seeded Kvitová came back from losing the first set to beat the Italian in one hour 55minutes on Melbourne Park's Hisense Arena. Kvitová, who defeated fifth seeded Australian Samantha Stosur in the third round, has now won nine matches in a row to start the year, following her win in the Brisbane International in the first week of January. The 20-year-old left hander from Fulnek in the Czech Republic is the first Czech woman to reach the quarter-finals in Melbourne since Nicole Vaidisová in 2007.