Tennis

U.S. Open

FLUSHING MEADOWS, N.Y. — To adapt the old saw about people going broke, Taylor Townsend’s rise to fame was fast, and then it was slow. At this summer’s U.S. Open, it has happened all at once.

At 29, Townsend has become what a lot of people in tennis thought she would be when she was a teenager: A big-time figure in her sport and one of the most talked-about athletes in America. Far fewer people thought it would happen like this for the American, a lefty with a dangerous combination of touch and power when she has both working at the same time.

Almost no one.