Tennis-Five things to watch out for on Day 3 of the U.S. Open

NEW YORK, Aug 30 (Reuters) - Five things to watch out for on day three of the U.S. 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 up on Sept. 10 * It will be Canada Day at the U.S. 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 U.S. 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 sport. (Reporting by Rory Carroll; Editing by Ed Osmond)