During the WTA Tour on Bali Samatha Stosur unofficialy broke Venus Williams serve speed record. Her fastest serve was 208kph (129.2452mph), so it looks like she set new women’s record. Current official record held by V.Williams is 207.6kph (128.9967mph). The WTA said Stosur struck was pending verification.
See Samatha Stosur’s serve speed conversion : 208kph conversion
PS. Despite her service struck Samatha Stosur lost her match with Maria Jose Martinez Sanchez 6:7, 5:7.