WASHINGTON — Sam Stosur recorded her 500th career victory Tuesday, moving into the second round of the Citi Open hard-court tournament by beating Kristina Mladenovic 6-2, 6-2.
Stosur is a 31-year-old Australian who won the 2011 U.S. Open. She is the seventh active woman with at least 500 match wins — across all levels, including at ITF, WTA, Grand Slam events, main draw and qualifying — and at least one Grand Slam singles title.
"Guess it proves how old I am," Stosur said after ending Tuesday's match by serving it out at love, closing with an ace at 116 mph (187 kph).