Sayaka Ishii

Sayaka Ishii is a Japanese professional tennis player born on 31 August 2005. She competes on the WTA Tour and has achieved a career-high ranking of 188. As of 5 October 2026, she is ranked 586th in the WTA singles rankings with 78 points. According to Tennis Post's match data, Ishii played one tournament in the 2026 season, recording one loss. She competed in the qualifying draw at Wimbledon, where she was eliminated.