Tennis star Stephens who won the 2017 U.S. Open

SLOANE

This American athlete also reached the 2018 French Open final and is known for her powerful baseline game.

This clue refers to Sloane Stephens, the American professional tennis player who made headlines by winning the 2017 U.S. Open women’s singles title. The answer is her first name, "SLOANE," which fits the grid length and matches the clue’s direct reference to her achievement. No wordplay is involved—it’s a straightforward sports trivia question about a well-known athlete.