Five things to watch out for on day three of the US Open on Wednesday.
* After rain led to the cancellation of all matches outside of the roof-covered Arthur Ashe Stadium on Tuesday, the tournament looks to make up for lost time with a busy schedule featuring 87 matches.
* Fans, players and organisers will keep a close eye on the forecast with wet weather potentially returning on Sunday and again during the second week of the tournament, which wraps upon September 10.
* It will be Canada Day at the US Open on Arthur Ashe Stadium with Montreal-born Eugenie Bouchard opening the action and 18-year-old Denis Shapovalov set to headline in the evening.
* All eyes will again be on 2006 US Open champion Maria Sharapova following her defeat of world number two Simona Halep as she takes on Hungarian Timea Babos in second-round action.
* Tennis Hall of Famer Billie Jean King will join USTA president Katrina Adams and "Good Morning America" co-anchor Robin Roberts at the sixth annual Sports Diversity and Inclusion Symposium, where the panel will discuss the strides made by women in sports.