The best matches of day 2 include Williams' return to the singles at 45, Alcaraz's tricky opener and Victoria Mboko's debut ...

Pretty much from the get-go at the U.S. Open on Monday, Madison Keys could tell she wasn’t hitting the ball well or feeling ...

Australian Open champion Madison Keys was undone by 89 unforced errors and was upset in the first round of the U.S. Open by ...

American Madison Keys couldn't overcome unforced errors and double faults as Renata Zarazua made Mexican women's tennis history at the U.S. Open.