In an 85-minute encounter, Serena was tested thoroughly in the second set, when, leading 6-4 and 1-0, Danielle surged into form. The world No.50 won four straight games to take control and looked set to take the match into the decider. But
Serena Williams powered confidently into the fourth round of the French Open with a 6-4 6-4 defeat of fellow American Danielle Collins on Friday as the draw opened up enticingly.