Marta Kostyuk

Marta Kostyuk arrives at No. 11 with 3,980 points and a compact body of work that reads sharply: four wins, one loss, an 80 percent winning rate. That single defeat stands as the only blemish on a season where the 24-year-old Ukrainian has managed her schedule carefully and converted most chances into results. Two career titles back up the ranking, though her current form suggests more are within reach.

The right-hander, born in Ukraine, has opened the year with quiet efficiency. Five matches is a small sample, but an 80 percent rate implies consistency rather than flash. Kostyuk grounds her game in steady returns and controlled aggression, a style suited to hard courts and the early-season grind. At 24, she sits inside the top dozen with room to climb, provided the win-loss balance holds up through longer stretches.