US Open: Battle of the Williams Sisters looms

US tennis star Serena Williams (R) and her sister Venus

Venus Williams has qualified for the quarter finals of the US Open, thrashing Anett Kontaveit 6-2, 6-1 and setting the stage for a possible quarter final showdown with Serena Williams.

The younger Williams is scheduled to play her fourth round match with fellow American Madison Keys.

A win for Serena, the world number one, would once again bring the two sisters head-to-head at the last Grand Slam of the Year.