Jessica Pegula, daughter of Bills, Sabres owners, into quarterfinals at Australian Open

Jessica Pegula has reached her first Grand Slam quarterfinal at the Australian Open by earning her first victory over an opponent ranked in the Top 10.

The 61st-ranked American, whose parents own Buffalo's NFL and NHL franchises, beat No. 5 seed Elina Svitolina of Ukraine 6-4, 3-6, 6-3 in Rod Laver Arena.

Pegula is a 26-year-old who has won four matches at Melbourne Park over the past week after entering the tournament with a total of three Grand Slam match wins for her career.

She came into the day with an 0-6 record against Top 10 women.

In the quarterfinals, the unseeded Pegula will play No. 22 Jennifer Brady of the United States or No. 28 Donna Vekic of Croatia.