Simona Halep is allowed to resume her tennis career whenever she wants.

Two-time Grand Slam champion Simona Halep has been provisionally suspended by the International Tennis Integrity Agency after failing a drug test during the U.S. Open in August.

Daria Snigur of Ukraine pulled off the first big upset of the U.S. Open, knocking off No. 7 seed Simona Halep 6-2, 0-6, 6-4.

Daniil Medvedev had an easy start to his U.S. Open title defense, beating Stefan Kozlov 6-2, 6-4, 6-0.