US Open 2016: Arthur Ashe Stadium new retractable roof - Sports Illustrated
US Open 2021: All You Need to Know About the Rules of Retractable Roof - EssentiallySports
All You Need to Know About the US Open 2019 Roof - EssentiallySports
Retractable roof construction at Arthur Ashe Stadium is subject of patent infringement, trade secret suit
Retractable Roof Among the Many Upgrades Unveiled for U.S. Open – Long Island Tennis Magazine
U.S. Open tennis tournament will debut second roofed stadium
Arthur Ashe Stadium A Step Closer To Finishing Retractable Roof - CBS Miami
It's so hot that the US Open adopted a new policy to partially close arena roofs
Usually the innovator, U.S. Open plays catch-up on facilities