You can tell Venus serving has really leveled off when even Justine is ahead of her.
Yes, but I am Sure that wouldn't be the case had Venus played the semis. You have to remember that not all of these players played the same # of matches.
But VERY impressive from Serena, so far ahead of the pack.
Venus Masha Caro Sloane
Timea Aga Petra Vika Kristyna&Karo Keys Carina
Osaka Bencic Sveta Simona Broady Vinci CiCi Mladenovic Garcia JJ Errani Duval