A trainer works on Simona Halep's leg during a medical time out during the fourth round of the U.S. Open tennis tournament against Sabine Lisicki, of Germany, Monday, Sept. 7, 2015, in New York.,Image: 584226109, License: Rights-managed, Restrictions: This content is intended for editorial use only. For other uses, additional clearances may be required., Model Release: no, Pictured: Sabine Lisicki,Simona Halep