Madison Keys stunned third seed Jessica Pegula 6-1, 6-3 in an all-American clash on Arthur Ashe Stadium on Monday, reaching the US Open quarterfinal for the first time since 2018.Madison Keys stunned third seed Jessica Pegula 6-1, 6-3 in an all-American clash on Arthur Ashe Stadium on Monday, reaching the US Open quarterfinal for the first time since 2018.Read More