With the world No.1 and No.2 crashing out, can the American seize the moment?
The North American team has made a dream start to their semi-final clash with Frances Tiafoe also securing a vital win.
Despite a lack of fans in the stands, there was plenty of entertainment on the court at the season-ending extravaganza.
The American has ended her breakthrough season on a high and now has a shot at glory at the prestigious WTA Finals.
Jessica Pegula is sensing an opportunity to make a deep run at her home grand slam.
The former champion dropped just five games en route to her latest victory at Roland Garros to set up a last four meeting against Daria Kasatkina.
The Tunisian equals her best ranking and is vying for the top 5. The American rises to No. 11
The American is through to the biggest final of her career to date and could break into the world's top 10 for the first time should...
Jessica Pegula is into the Australian Open quarter-finals for a second year in a row.