- [announcer] do you have an invention idea but don t know what to do next? call invent help today. they can help you get started with your idea. call now 800-710-0020. the u.s. open is in full swing. see what she did there? with coco gauff among the top stars in action monday, the american teen struggled but came back to win in three sets. former world number one wozniacki hasn t played a grand slam in three years but she had no trouble in her first round victory. and on the men s side, novak djokovic will reclaim his world number one ranking after a decisive first round win.