Serena Williams says she's close to being back to her best after reaching the US Open semi finals. Williams beat Karolina Pliskova in straight sets to secure her first win over a top 10 player since making her comeback earlier this year.
Serena Williams says she's close to being back to her best after reaching the US Open semi finals. Williams beat Karolina Pliskova in straight sets to secure her first win over a top 10 player since making her comeback earlier this year.