Jessica Pegula and Aryna Sabalenka both will be trying to win the U.S. Open for the first time when they play each other in Saturday’s final at Flushing Meadows. The title match in Arthur Ashe Stadium is scheduled to begin at about 4 p.m. EDT. Pegula has won 15 of her past 16 matches, all on hard courts like those used at Flushing Meadows.