Yuliia Starodubtseva is a Ukrainian professional tennis player who reached a career-high singles ranking of world No. 53 in April 2026, after playing college tennis at Old Dominion University. She made history in 2024 by becoming the first woman in the Open Era to qualify for all four Grand Slam main draws in a single season, also reaching her first WTA 1000 quarterfinal at the China Open (where she beat Anna Kalinskaya before losing to Coco Gauff). In 2025, she reached the third round of the French Open as a lucky loser—defeating Anastasia Potapova before falling to Jasmine Paolini—and later played the longest match of the season at the Ningbo Open, a 3-hour-33-minute battle against Belinda Bencic. Her biggest breakthrough came in 2026 when she reached her first WTA Tour final at the Charleston Open, upsetting Madison Keys before losing to defending champion Jessica Pegula, which pushed her into the top 60. She also defeated Elena Rybakina at the 2026 French Open to reach the third round for a second straight year, and has won four ITF Circuit singles titles along the way.