NY Times · Sep 2, 2018
More U.S. Open Upsets Come at the New Armstrong Stadium
Fourth-seeded Angelique Kerber, above, on Saturday became the latest top player to exit the U.S. Open, after top-seeded Simona Halep on Monday and second-seeded Caroline Wozniacki on Thursday.Like other building projects at the Billie Jean King National Tennis Center, which sits atop soft, unstable soil, the new Louis Armstrong Stadium needed to be constructed with lightweight materials to remain structurally sound.
The stadium itself has been sturdy through its first week of the United States Open, but the women’s singles draw has crumbled within it, with four of the top five seeds losing there.