Serena Williams has survived another scare to beat older sister Venus 3-6 6-3 6-4 and reach the quarter-finals of the inaugural Top Seed Open in Lexington.
Serena, who in her first-round match was five points from defeat against world No.60 Bernarda Pera, rallied from a set down and then a 4-2 deciding set deficit to defeat her sibling in an entertaining two hour and 19-minute encounter.
Serena won three games in a row to lead 5-4 in the decider and served out the match, claiming victory on her first match point.
The American will next face either countrywoman Shelby Rogers or rising Canadian star Leylah Annie Fernandez.
The suspension of tennis caused by the COVID-19 pandemic meant that until this week, Serena had not competed on the tour since February.